diff --git a/client/src/api/datasetCollections.ts b/client/src/api/datasetCollections.ts
index ec8a8ee4811..52daf47b5f8 100644
--- a/client/src/api/datasetCollections.ts
+++ b/client/src/api/datasetCollections.ts
@@ -14,6 +14,14 @@ const DEFAULT_LIMIT = 50;
 
 export type CollectionType = string;
 
+export type SampleSheetCollectionType =
+    | "sample_sheet"
+    | "sample_sheet:paired"
+    | "sample_sheet:paired_or_unpaired"
+    | "sample_sheet:record";
+// mirror the python definition here
+export type SampleSheetColumnValueT = string | number | boolean;
+
 /**
  * Fetches the details of a collection.
  * @param params.id The ID of the collection (HDCA) to fetch.
diff --git a/client/src/api/index.ts b/client/src/api/index.ts
index 9702b8d2076..d97edbb4a2c 100644
--- a/client/src/api/index.ts
+++ b/client/src/api/index.ts
@@ -327,6 +327,10 @@ export type ObjectExportTaskResponse = components["schemas"]["ObjectExportTaskRe
 export type ExportObjectRequestMetadata = components["schemas"]["ExportObjectRequestMetadata"];
 export type ExportObjectResultMetadata = components["schemas"]["ExportObjectResultMetadata"];
 
+export type SampleSheetColumnDefinition = components["schemas"]["SampleSheetColumnDefinitionModel"];
+export type SampleSheetColumnDefinitionType = SampleSheetColumnDefinition["type"];
+export type SampleSheetColumnDefinitions = SampleSheetColumnDefinition[] | null;
+
 export type AsyncTaskResultSummary = components["schemas"]["AsyncTaskResultSummary"];
 
 export type CollectionElementIdentifiers = components["schemas"]["CollectionElementIdentifier"][];
diff --git a/client/src/components/Collections/CollectionCreatorIndex.vue b/client/src/components/Collections/CollectionCreatorIndex.vue
index 0fe7d82d621..eb88736bcec 100644
--- a/client/src/components/Collections/CollectionCreatorIndex.vue
+++ b/client/src/components/Collections/CollectionCreatorIndex.vue
@@ -5,7 +5,8 @@ import { BAlert, BLink, BModal } from "bootstrap-vue";
 import { computed, ref, watch } from "vue";
 
 import { type CreateNewCollectionPayload, type HDCASummary, type HistoryItemSummary, isHDCA } from "@/api";
-import { createHistoryDatasetCollectionInstanceFull } from "@/api/datasetCollections";
+import { createHistoryDatasetCollectionInstanceFull, type SampleSheetCollectionType } from "@/api/datasetCollections";
+import type { ExtendedCollectionType } from "@/components/Form/Elements/FormData/types";
 import { useCollectionBuilderItemsStore } from "@/stores/collectionBuilderItemsStore";
 import { useHistoryItemsStore } from "@/stores/historyItemsStore";
 import { useHistoryStore } from "@/stores/historyStore";
@@ -19,6 +20,7 @@ import type { SupportedPairedOrPairedBuilderCollectionTypes } from "./common/use
 import ListCollectionCreator from "./ListCollectionCreator.vue";
 import PairCollectionCreator from "./PairCollectionCreator.vue";
 import PairedOrUnpairedListCollectionCreator from "./PairedOrUnpairedListCollectionCreator.vue";
+import SampleSheetCollectionCreator from "./SampleSheetCollectionCreator.vue";
 import Heading from "@/components/Common/Heading.vue";
 import GenericItem from "@/components/History/Content/GenericItem.vue";
 import LoadingSpan from "@/components/LoadingSpan.vue";
@@ -27,6 +29,7 @@ interface Props {
     historyId: string;
     show: boolean;
     collectionType: CollectionBuilderType;
+    extendedCollectionType: ExtendedCollectionType;
     selectedItems?: HistoryItemSummary[];
     defaultHideSourceItems?: boolean;
     extensions?: string[];
@@ -231,6 +234,13 @@ function redrawCreator() {
     }
 }
 
+const sampleSheetType = computed<SampleSheetCollectionType | null>(() => {
+    if (!props.collectionType.startsWith("sample_sheet")) {
+        return null;
+    }
+    return props.collectionType as SampleSheetCollectionType;
+});
+
 defineExpose({ redrawCreator });
 </script>
 
@@ -329,6 +339,17 @@ defineExpose({ redrawCreator });
             mode="modal"
             @on-cancel="hideCreator"
             @on-create="createHDCA" />
+        <SampleSheetCollectionCreator
+            v-else-if="sampleSheetType"
+            :history-id="props.historyId"
+            :initial-elements="creatorItems || []"
+            :default-hide-source-items="props.defaultHideSourceItems"
+            :from-selection="fromSelection"
+            :extensions="props.extensions"
+            :collection-type="sampleSheetType"
+            :extended-collection-type="extendedCollectionType"
+            @on-create="createHDCA"
+            @on-cancel="hideCreator" />
     </component>
 </template>
 
diff --git a/client/src/components/Collections/SampleSheetCollectionCreator.vue b/client/src/components/Collections/SampleSheetCollectionCreator.vue
new file mode 100644
index 00000000000..97b54353a78
--- /dev/null
+++ b/client/src/components/Collections/SampleSheetCollectionCreator.vue
@@ -0,0 +1,28 @@
+<script lang="ts" setup>
+import type { SampleSheetCollectionType } from "@/api/datasetCollections";
+import type { ExtendedCollectionType } from "@/components/Form/Elements/FormData/types";
+import { useConfig } from "@/composables/config";
+
+import SampleSheetWizard from "./SampleSheetWizard.vue";
+
+const { config, isConfigLoaded } = useConfig();
+
+interface Props {
+    collectionType: SampleSheetCollectionType;
+    extendedCollectionType: ExtendedCollectionType;
+    extensions?: string[];
+}
+
+defineProps<Props>();
+</script>
+
+<template>
+    <div class="sample-sheet-collection-creator">
+        <SampleSheetWizard
+            v-if="isConfigLoaded"
+            :collection-type="collectionType"
+            :extended-collection-type="extendedCollectionType"
+            :file-sources-configured="config.file_sources_configured"
+            :ftp-upload-site="config.ftp_upload_site" />
+    </div>
+</template>
diff --git a/client/src/components/Collections/SampleSheetWizard.vue b/client/src/components/Collections/SampleSheetWizard.vue
new file mode 100644
index 00000000000..05ade878cd5
--- /dev/null
+++ b/client/src/components/Collections/SampleSheetWizard.vue
@@ -0,0 +1,507 @@
+<script setup lang="ts">
+import { BAlert, BCardGroup, BLink } from "bootstrap-vue";
+import { storeToRefs } from "pinia";
+import { computed, nextTick, ref, watch } from "vue";
+
+import type { CreateNewCollectionPayload, HDCADetailed } from "@/api";
+import {
+    createHistoryDatasetCollectionInstanceFull,
+    fetchCollectionDetails,
+    type SampleSheetCollectionType,
+} from "@/api/datasetCollections";
+import { ERROR_STATES, TERMINAL_STATES } from "@/api/jobs";
+import { fetch, type FetchDataPayload, fetchJobErrorMessage, type HdcaUploadTarget } from "@/api/tools";
+import { stripExtension } from "@/components/Collections/common/stripExtension";
+import { useWorkbookDropHandling } from "@/components/Collections/common/useWorkbooks";
+import { parseWorkbook, withAutoListIdentifiers } from "@/components/Collections/sheet/workbooks";
+import type {
+    AnyParsedSampleSheetWorkbook,
+    InitialElements,
+    PrefixColumnsType,
+} from "@/components/Collections/wizard/types";
+import { useWizard } from "@/components/Common/Wizard/useWizard";
+import type { ExtendedCollectionType } from "@/components/Form/Elements/FormData/types";
+import { useHistoryStore } from "@/stores/historyStore";
+import { useJobStore } from "@/stores/jobStore";
+import { errorMessageAsString } from "@/utils/simple-error";
+
+import { attemptCreate, type CollectionCreatorComponent } from "./common/useCollectionCreator";
+import { useAutoPairing } from "./usePairing";
+import type { RulesSourceFrom } from "./wizard/types";
+import { useFileSetSources } from "./wizard/useFileSetSources";
+
+import SampleSheetGrid from "./sheet/SampleSheetGrid.vue";
+import PasteData from "./wizard/PasteData.vue";
+import SelectCollection from "./wizard/SelectCollection.vue";
+import SelectDataset from "./wizard/SelectDataset.vue";
+import SelectFolder from "./wizard/SelectFolder.vue";
+import SourceFromCollection from "./wizard/SourceFromCollection.vue";
+import SourceFromDatasetAsTable from "./wizard/SourceFromDatasetAsTable.vue";
+import SourceFromPastedData from "./wizard/SourceFromPastedData.vue";
+import SourceFromRemoteFiles from "./wizard/SourceFromRemoteFiles.vue";
+import SourceFromWorkbook from "./wizard/SourceFromWorkbook.vue";
+import UploadSampleSheet from "./wizard/UploadSampleSheet.vue";
+import GenericWizard from "@/components/Common/Wizard/GenericWizard.vue";
+import LoadingSpan from "@/components/LoadingSpan.vue";
+
+const historyStore = useHistoryStore();
+const { currentHistoryId } = storeToRefs(historyStore);
+
+const sourceIsBusy = ref<boolean>(false);
+const workbookCompleted = ref<boolean>(false);
+const { pasteData, tabularDatasetContents, uris, setRemoteFilesFolder, onFtp, setDatasetContents, setPasteTable } =
+    useFileSetSources(sourceIsBusy);
+
+interface Props {
+    collectionType: SampleSheetCollectionType;
+    fileSourcesConfigured: boolean;
+    ftpUploadSite?: string;
+    extendedCollectionType: ExtendedCollectionType;
+    extensions?: string[];
+}
+
+async function handleUploadFromWizard(workbookContents: string) {
+    workbookCompleted.value = true;
+    await handleWorkbook(workbookContents);
+    wizard.goTo("fill-grid");
+}
+
+const props = defineProps<Props>();
+
+const sourceInstructions = computed(() => {
+    return `Sample sheets can be initialized from a set or files, URIs, or existing collections of datasets.`;
+});
+
+async function handleWorkbook(base64Content: string) {
+    const { data, error } = await parseWorkbook(
+        props.collectionType,
+        props.extendedCollectionType.columnDefinitions,
+        prefixColumnsType.value,
+        base64Content
+    );
+    if (data) {
+        parsedWorkbook.value = data;
+    } else {
+        console.log(error);
+    }
+}
+
+// TODO: import and use uploadErrorMessage
+const {
+    browseFiles,
+    dropZoneClasses,
+    faUpload,
+    FontAwesomeIcon,
+    handleDrop,
+    HiddenWorkbookUploadInput,
+    isDragging,
+    onFileUpload,
+    uploadRef,
+} = useWorkbookDropHandling(handleUploadFromWizard);
+
+type UriForAutoPairing = { name: string; uri: string };
+
+const { countPaired, currentForwardFilter, currentReverseFilter, AutoPairing, autoPair, onFilters, pairs, unpaired } =
+    useAutoPairing<UriForAutoPairing>();
+
+const sourceFrom = ref<RulesSourceFrom>("remote_files");
+const prefixColumnsType = ref<PrefixColumnsType>("URI");
+const parsedWorkbook = ref<AnyParsedSampleSheetWorkbook | undefined>(undefined);
+
+function setSourceForm(newValue: RulesSourceFrom) {
+    sourceFrom.value = newValue;
+    if (sourceFrom.value == "collection") {
+        prefixColumnsType.value = "ModelObjects";
+    } else {
+        prefixColumnsType.value = "URI";
+    }
+}
+
+const columnDefinitions = computed(() => {
+    return props.extendedCollectionType.columnDefinitions ?? [];
+});
+
+const targetCollectionId = ref<string | undefined>(undefined);
+const targetCollection = ref<HDCADetailed | undefined>(undefined);
+
+function resetElements() {
+    parsedWorkbook.value = undefined;
+}
+
+function setTargetCollection(newValue: string) {
+    resetElements();
+    targetCollectionId.value = newValue;
+}
+
+const fetchingCollection = ref<boolean>(false);
+
+watch(targetCollectionId, async () => {
+    if (targetCollectionId.value) {
+        fetchingCollection.value = true;
+        try {
+            // TODO: spinner while loading
+            const details = await fetchCollectionDetails({ hdca_id: targetCollectionId.value });
+            targetCollection.value = details;
+            // Nothing else to do on the page, just skip to the next step.
+            nextTick(() => {
+                wizard.goTo("fill-grid");
+            });
+        } catch (error) {
+            // TODO: proper error handling here.
+            console.error("Error fetching collection details:", error);
+        } finally {
+            fetchingCollection.value = false;
+        }
+    }
+});
+
+const wizard = useWizard({
+    "select-source": {
+        label: "Select source",
+        instructions: sourceInstructions,
+        isValid: () => true,
+        isSkippable: () => false,
+    },
+    "select-remote-files-folder": {
+        label: "Select folder",
+        instructions: "Select folder of files to import.",
+        isValid: () => sourceFrom.value === "remote_files" && Boolean(uris.value.length > 0),
+        isSkippable: () => sourceFrom.value !== "remote_files",
+    },
+    "paste-data": {
+        label: "Paste data",
+        instructions: "Paste data containing URIs and optional extra metadata.",
+        isValid: () => sourceFrom.value === "pasted_table" && pasteData.value.length > 0,
+        isSkippable: () => sourceFrom.value !== "pasted_table",
+    },
+    "select-dataset": {
+        label: "Select dataset",
+        instructions: "Select tabular dataset to load URIs and metadata from.",
+        isValid: () => sourceFrom.value === "dataset_as_table" && tabularDatasetContents.value.length > 0,
+        isSkippable: () => sourceFrom.value !== "dataset_as_table",
+    },
+    "select-collection": {
+        label: "Select collection",
+        instructions: "Select existing collection to transform into a sample sheet.",
+        isValid: () => sourceFrom.value === "collection" && Boolean(targetCollection.value),
+        isSkippable: () => sourceFrom.value !== "collection",
+    },
+    "auto-pairing": {
+        label: "Auto Pairing",
+        instructions: computed(() => {
+            return "Configure auto-pairing";
+        }),
+        isValid: () => true,
+        isSkippable: () => toAutoPair.value === undefined || allPaired.value,
+    },
+    "upload-workbook": {
+        label: "Upload workbook",
+        instructions: "Upload a workbook containing with URIs and metadata",
+        isValid: () => sourceFrom.value === "workbook" && workbookCompleted.value,
+        isSkippable: () => sourceFrom.value !== "workbook",
+    },
+    "fill-grid": {
+        label: "Fill sheet",
+        instructions: "Fill in metadata to describe the files you're importing.",
+        isValid: () => true,
+        isSkippable: () => false,
+    },
+});
+
+const importButtonLabel = computed(() => {
+    if (sourceFrom.value == "collection") {
+        return "Build";
+    } else {
+        return "Import";
+    }
+});
+
+const initialElements = computed<InitialElements>(() => {
+    if (parsedWorkbook.value) {
+        // just short cut all the rest - we have an upload with actual sample sheet data...
+        return parsedWorkbook.value;
+    } else {
+        if (pairs.value) {
+            // if we have pairs, we return them as initial elements.
+            const rows: InitialElements = [];
+            for (const pair of pairs.value) {
+                rows.push([pair.forward.uri, pair.reverse.uri, pair.name]);
+            }
+            if (props.collectionType === "sample_sheet:paired_or_unpaired") {
+                // if we have paired_or_unpaired collection, add the unpaired datasets as well.
+                for (const unpaired_entry of unpaired.value ?? []) {
+                    const identifier = stripExtension(guessUriFilename(unpaired_entry.uri));
+                    rows.push([unpaired_entry.uri, "", identifier]);
+                }
+            }
+            return rows;
+        } else if (sourceFrom.value == "remote_files") {
+            const rows: InitialElements = [];
+            for (const uri of uris.value) {
+                rows.push([uri.uri]);
+            }
+            return withAutoListIdentifiers(rows);
+        } else if (sourceFrom.value == "pasted_table") {
+            return withAutoListIdentifiers(pasteData.value) as InitialElements;
+        } else if (sourceFrom.value == "dataset_as_table") {
+            return withAutoListIdentifiers(tabularDatasetContents.value) as InitialElements;
+        } else if (sourceFrom.value == "collection") {
+            if (!targetCollection.value) {
+                console.log("LOGIC ERROR: calling initial element for collection without collection contents fetched");
+            } else {
+                return targetCollection.value as InitialElements;
+            }
+        }
+        return [];
+    }
+});
+
+const pastedDataLooksPrePaired = computed(() => {
+    // if the pasted data has a header row, we assume it is prepared for sample sheet.
+    if (sourceFrom.value == "pasted_table") {
+        const pastedData = pasteData.value;
+        if (pastedData.length === 0) {
+            return false;
+        }
+        for (const row of pastedData) {
+            if (row.length !== 2) {
+                return false; // we expect exactly two columns for each paired data.
+            }
+        }
+        return true;
+    } else {
+        return false;
+    }
+});
+
+function guessUriFilename(uri: string): string {
+    const parts = uri.split("/");
+    const last_part = parts[parts.length - 1] ?? uri;
+    if (last_part.indexOf("?") !== -1) {
+        // remove the query string
+        return last_part.split("?")[0] as string;
+    } else {
+        return last_part;
+    }
+}
+
+function adaptUriToAutoPair(uri: string): { name: string; uri: string } {
+    return { name: guessUriFilename(uri), uri };
+}
+
+const toAutoPair = computed(() => {
+    if (props.collectionType === "sample_sheet:paired" || props.collectionType === "sample_sheet:paired_or_unpaired") {
+        if (pastedDataLooksPrePaired.value) {
+            // don't auto-pair anything - the data was pasted in two clean columns - take it as is.
+            return undefined;
+        }
+        if (sourceFrom.value == "pasted_table") {
+            const uris: string[] = [];
+            for (const row of pasteData.value) {
+                uris.push(...row);
+            }
+            return uris.map(adaptUriToAutoPair);
+        } else {
+            return undefined;
+        }
+    } else {
+        return undefined;
+    }
+});
+
+const allPaired = computed<boolean>(() => {
+    return !!(toAutoPair.value && countPaired.value === toAutoPair.value.length / 2);
+});
+
+watch(toAutoPair, (value) => {
+    if (value !== undefined) {
+        autoPair(value);
+    }
+});
+
+const collectionCreator = ref<CollectionCreatorComponent>();
+
+function submit() {
+    if (collectionCreator.value) {
+        attemptCreate(collectionCreator);
+    }
+}
+
+const isSimpleSampleSheet = computed(() => {
+    // we can do more with a simple list of URLs that don't need to be paired..
+    return props.collectionType === "sample_sheet";
+});
+
+const fetchJobId = ref<string | undefined>(undefined);
+const waitingOnCollectionCreateApi = ref<boolean>(false);
+const collectionCreateError = ref<string | undefined>(undefined);
+const collectionCreated = ref<boolean>(false);
+const { getJob, pollJobUntilTerminal } = useJobStore();
+
+const job = computed(() => {
+    if (fetchJobId.value) {
+        const jobId = fetchJobId.value;
+        const job = getJob(jobId);
+        if (job) {
+            return job;
+        }
+    }
+    return undefined;
+});
+
+async function onFetchTarget(fetchTarget: HdcaUploadTarget) {
+    const fetchPayload: FetchDataPayload = {
+        history_id: currentHistoryId.value as string,
+        targets: [fetchTarget],
+    };
+    try {
+        const jobId = await fetch(fetchPayload);
+        fetchJobId.value = jobId;
+        pollJobUntilTerminal({ id: jobId });
+        // we monitor the job with the watch below and update the state when needed.
+    } catch (e) {
+        console.log(e);
+    }
+}
+
+watch(job, (newValue) => {
+    const state = newValue?.state ?? "new";
+    if (TERMINAL_STATES.indexOf(state) !== -1) {
+        if (ERROR_STATES.indexOf(state) !== -1) {
+            collectionCreateError.value = fetchJobErrorMessage(newValue!);
+        } else {
+            collectionCreated.value = true;
+        }
+    }
+});
+
+async function onCollectionCreatePayload(payload: CreateNewCollectionPayload) {
+    waitingOnCollectionCreateApi.value = true;
+    try {
+        await createHistoryDatasetCollectionInstanceFull(payload);
+        collectionCreated.value = true;
+    } catch (error) {
+        collectionCreateError.value = errorMessageAsString(error);
+    }
+    waitingOnCollectionCreateApi.value = false;
+}
+
+const wizardIsBusy = computed(() => {
+    return (
+        sourceIsBusy.value ||
+        fetchingCollection.value ||
+        waitingOnCollectionCreateApi.value ||
+        !!job.value ||
+        collectionCreated.value
+    );
+});
+</script>
+
+<template>
+    <GenericWizard :use="wizard" :is-busy="wizardIsBusy" :submit-button-label="importButtonLabel" @submit="submit">
+        <div v-if="wizard.isCurrent('select-source')">
+            <BCardGroup deck>
+                <SourceFromRemoteFiles
+                    v-if="isSimpleSampleSheet"
+                    :selected="sourceFrom === 'remote_files'"
+                    @select="setSourceForm" />
+                <SourceFromPastedData :selected="sourceFrom === 'pasted_table'" @select="setSourceForm" />
+                <SourceFromDatasetAsTable
+                    v-if="isSimpleSampleSheet"
+                    :selected="sourceFrom === 'dataset_as_table'"
+                    @select="setSourceForm" />
+                <SourceFromWorkbook
+                    creating-what="collections"
+                    :selected="sourceFrom === 'workbook'"
+                    @select="setSourceForm" />
+                <SourceFromCollection :selected="sourceFrom === 'collection'" @select="setSourceForm" />
+            </BCardGroup>
+        </div>
+        <div v-else-if="wizard.isCurrent('paste-data')">
+            <PasteData @onChange="setPasteTable" />
+        </div>
+        <div v-else-if="wizard.isCurrent('select-remote-files-folder')">
+            <SelectFolder :ftp-upload-site="ftpUploadSite" @onChange="setRemoteFilesFolder" @onFtp="onFtp" />
+        </div>
+        <div v-else-if="wizard.isCurrent('select-dataset')">
+            <SelectDataset @onChange="setDatasetContents" />
+        </div>
+        <div v-else-if="wizard.isCurrent('auto-pairing')">
+            <AutoPairing
+                v-if="collectionType === 'sample_sheet:paired' || collectionType === 'sample_sheet:paired_or_unpaired'"
+                :elements="toAutoPair ?? []"
+                :forward-filter="currentForwardFilter"
+                :reverse-filter="currentReverseFilter"
+                :collection-type="collectionType"
+                :remove-extensions="true"
+                :show-hid="false"
+                mode="wizard"
+                @on-update="onFilters" />
+        </div>
+        <div v-else-if="wizard.isCurrent('select-collection')">
+            <SelectCollection
+                :collection-type="collectionType"
+                :extended-collection-type="extendedCollectionType"
+                @onChange="setTargetCollection" />
+        </div>
+        <div v-else-if="wizard.isCurrent('upload-workbook')">
+            <UploadSampleSheet
+                :collection-type="collectionType"
+                :extended-collection-type="extendedCollectionType"
+                @workbookContents="handleUploadFromWizard" />
+        </div>
+        <div v-else-if="wizard.isCurrent('fill-grid') && currentHistoryId" style="width: 100%">
+            <BAlert v-if="collectionCreateError" show dismissible @dismissed="collectionCreateError = undefined">
+                Failed to create sample sheet collection for supplied input. {{ collectionCreateError }}.
+            </BAlert>
+            <div v-if="collectionCreated">
+                <BAlert variant="success" data-description="collection created" show
+                    >Sample sheet collection successfully created!</BAlert
+                >
+            </div>
+            <div v-else-if="job">
+                <LoadingSpan message="Waiting on data import job for sample sheet collection" />
+            </div>
+            <div v-else-if="waitingOnCollectionCreateApi">
+                <LoadingSpan message="Creating sample sheet collection from supplied inputs" />
+            </div>
+            <SampleSheetGrid
+                v-else-if="columnDefinitions"
+                ref="collectionCreator"
+                :current-history-id="currentHistoryId"
+                :collection-type="collectionType"
+                :column-definitions="columnDefinitions"
+                :initial-elements="initialElements"
+                :extensions="extensions"
+                :busy="wizardIsBusy"
+                height="300px"
+                @workbook-contents="handleWorkbook"
+                @on-fetch-target="onFetchTarget"
+                @on-collection-create-payload="onCollectionCreatePayload" />
+        </div>
+        <div v-if="!wizard.isCurrent('fill-grid')" class="text-center">
+            <div
+                class="w-100 p-3 text-light"
+                data-galaxy-file-drop-target
+                :class="dropZoneClasses"
+                @drop.prevent="handleDrop"
+                @dragover.prevent="isDragging = true"
+                @dragleave.prevent="isDragging = false">
+                <BLink href="#" @click.prevent="browseFiles">
+                    <FontAwesomeIcon size="xl" :icon="faUpload" />
+                    Already have a completed workbook? Upload it here.
+                </BLink>
+                <HiddenWorkbookUploadInput ref="uploadRef" @onFileUpload="onFileUpload" />
+            </div>
+        </div>
+    </GenericWizard>
+</template>
+
+<style scoped>
+@import "@/components/Collections/wizard/workbook-dropzones.scss";
+
+.dropzone {
+    padding: 7px !important;
+    width: 100%;
+}
+</style>
diff --git a/client/src/components/Collections/common/AutoPairing.vue b/client/src/components/Collections/common/AutoPairing.vue
index 9435997943c..bd59964b85d 100644
--- a/client/src/components/Collections/common/AutoPairing.vue
+++ b/client/src/components/Collections/common/AutoPairing.vue
@@ -3,6 +3,7 @@ import { BButton } from "bootstrap-vue";
 import { computed, ref } from "vue";
 
 import type { HistoryItemSummary } from "@/api";
+import type { HasName } from "@/components/Collections/pairing";
 import localize from "@/utils/localization";
 
 import { useExtensionFiltering } from "./useExtensionFilter";
@@ -10,9 +11,16 @@ import { usePairingSummary } from "./usePairingSummary";
 
 import PairingFilterInputGroup from "./PairingFilterInputGroup.vue";
 
+type ElementType = HistoryItemSummary | HasName;
+type ElementsType = HistoryItemSummary[] | HasName[];
+
 interface Props {
-    elements: HistoryItemSummary[];
-    collectionType: "list:paired" | "list:paired_or_unpaired";
+    elements: ElementsType;
+    collectionType:
+        | "list:paired"
+        | "list:paired_or_unpaired"
+        | "sample_sheet:paired"
+        | "sample_sheet:paired_or_unpaired";
     forwardFilter?: string;
     reverseFilter?: string;
     removeExtensions: boolean;
@@ -31,7 +39,7 @@ const props = defineProps<Props>();
 
 const currentForwardFilter = ref(props.forwardFilter || "");
 const currentReverseFilter = ref(props.reverseFilter || "");
-const { currentSummary, summaryText, autoPair } = usePairingSummary<HistoryItemSummary>(props);
+const { currentSummary, summaryText, autoPair } = usePairingSummary<ElementType>(props);
 
 const { showElementExtension } = useExtensionFiltering(props);
 
@@ -60,6 +68,14 @@ const whereIsTheBuilder = computed(() => {
     }
 });
 
+function getHid(element: ElementType): string {
+    if ("hid" in element) {
+        return element.hid.toString();
+    } else {
+        return "";
+    }
+}
+
 function onApply() {
     emit("on-apply", currentForwardFilter.value, currentReverseFilter.value);
 }
@@ -84,9 +100,9 @@ function onApply() {
                 <li v-for="(pair, index) of currentSummary?.pairs" :key="`paired_${index}`">
                     <span v-if="index > 0">,</span>
                     <span class="pair-name">{{ pair.name }}</span> (<span class="direction">FORWARD</span
-                    ><span v-if="showHid" class="dataset-hid">{{ pair.forward.hid }}: </span
+                    ><span v-if="showHid" class="dataset-hid">{{ getHid(pair.forward) }}: </span
                     ><span class="dataset-name">{{ pair.forward.name }}</span> | <span class="direction">REVERSE</span
-                    ><span v-if="showHid" class="dataset-hid">{{ pair.reverse.hid }}: </span
+                    ><span v-if="showHid" class="dataset-hid">{{ getHid(pair.reverse) }}: </span
                     ><span class="dataset-name">{{ pair.reverse.name }}</span
                     >)
                 </li>
@@ -96,7 +112,7 @@ function onApply() {
                 <div class="summary-list-description">
                     These datasets were not paired automatically. This builder will allow you to match any of pairs of
                     these manually {{ whereIsTheBuilder }}.
-                    <span v-if="collectionType == 'list:paired'">
+                    <span v-if="collectionType == 'list:paired' || collectionType == 'sample_sheet:paired'">
                         All unmatched datasets will not be included in the final list of paired datasets.
                     </span>
                     <span v-else>
@@ -106,10 +122,14 @@ function onApply() {
                 <ol class="summary-list">
                     <li v-for="(unpairedDataset, index) of currentSummary?.unpaired" :key="`unpaired_${index}`">
                         <span v-if="index > 0">,</span>
-                        <span v-if="showHid" class="dataset-hid">{{ unpairedDataset.hid }}: </span>
+                        <span v-if="showHid" class="dataset-hid">{{ getHid(unpairedDataset) }}: </span>
                         <span class="unpaired-dataset-name dataset-name">{{ unpairedDataset.name }}</span>
                         <span
-                            v-if="'extension' in unpairedDataset && showElementExtension(unpairedDataset)"
+                            v-if="
+                                typeof unpairedDataset !== 'string' &&
+                                'extension' in unpairedDataset &&
+                                showElementExtension(unpairedDataset)
+                            "
                             class="dataset-extension-wrapper"
                             >(
                             <span class="dataset-extension">{{ unpairedDataset.extension }}</span>
diff --git a/client/src/components/Collections/common/usePairingSummary.ts b/client/src/components/Collections/common/usePairingSummary.ts
index 07333b2633d..6e1ad76dc8b 100644
--- a/client/src/components/Collections/common/usePairingSummary.ts
+++ b/client/src/components/Collections/common/usePairingSummary.ts
@@ -5,7 +5,10 @@ import { type AutoPairingResult, type HasName, splitIntoPairedAndUnpaired } from
 import type { SupportedPairedOrPairedBuilderCollectionTypes } from "./useCollectionCreator";
 
 interface PropsWithCollectionType {
-    collectionType: SupportedPairedOrPairedBuilderCollectionTypes;
+    collectionType:
+        | SupportedPairedOrPairedBuilderCollectionTypes
+        | "sample_sheet:paired"
+        | "sample_sheet:paired_or_unpaired";
 }
 
 export function usePairingSummary<T extends HasName>(props: PropsWithCollectionType) {
diff --git a/client/src/components/Collections/sheet/DownloadWorkbookButton.vue b/client/src/components/Collections/sheet/DownloadWorkbookButton.vue
new file mode 100644
index 00000000000..aec1084ec9e
--- /dev/null
+++ b/client/src/components/Collections/sheet/DownloadWorkbookButton.vue
@@ -0,0 +1,22 @@
+<script setup lang="ts">
+import { library } from "@fortawesome/fontawesome-svg-core";
+import { faFileExcel } from "@fortawesome/free-solid-svg-icons";
+import { FontAwesomeIcon } from "@fortawesome/vue-fontawesome";
+import { BButton } from "bootstrap-vue";
+
+library.add(faFileExcel);
+
+interface Props {
+    title: string;
+}
+
+defineProps<Props>();
+
+const emit = defineEmits(["click"]);
+</script>
+
+<template>
+    <BButton :title="title" role="button" variant="link" size="sm" class="ml-0" @click="emit('click')">
+        <FontAwesomeIcon icon="file-excel" />
+    </BButton>
+</template>
diff --git a/client/src/components/Collections/sheet/SampleSheetGrid.vue b/client/src/components/Collections/sheet/SampleSheetGrid.vue
new file mode 100644
index 00000000000..6d320861ae3
--- /dev/null
+++ b/client/src/components/Collections/sheet/SampleSheetGrid.vue
@@ -0,0 +1,645 @@
+<script lang="ts" setup>
+import { faDownload } from "@fortawesome/free-solid-svg-icons";
+import { FontAwesomeIcon } from "@fortawesome/vue-fontawesome";
+import type { ColDef, ValueSetterParams } from "ag-grid-community";
+import { BCol, BInputGroup, BLink, BRow } from "bootstrap-vue";
+import { computed, ref, watch } from "vue";
+
+import type {
+    CollectionElementIdentifiers,
+    components,
+    CreateNewCollectionPayload,
+    DCESummary,
+    DCObject,
+    HDAObject,
+    SampleSheetColumnDefinition,
+    SampleSheetColumnDefinitions,
+} from "@/api";
+import type { SampleSheetCollectionType, SampleSheetColumnValueT } from "@/api/datasetCollections";
+import {
+    type HdcaUploadTarget,
+    type NestedElement,
+    nestedElement,
+    type UrlDataElement,
+    urlDataElement,
+} from "@/api/tools";
+import { useCollectionCreation } from "@/components/Collections/common/useCollectionCreation";
+import { useWorkbookDropHandling } from "@/components/Collections/common/useWorkbooks";
+import {
+    downloadWorkbook,
+    downloadWorkbookForCollection,
+    initialValue,
+} from "@/components/Collections/sheet/workbooks";
+import type { InitialElements, ParsedFetchWorkbookColumn } from "@/components/Collections/wizard/types";
+import { Toast } from "@/composables/toast";
+import { useUploadConfigurations } from "@/composables/uploadConfigurations";
+import { useAgGrid } from "@/composables/useAgGrid";
+import localize from "@/utils/localization";
+
+import UploadSelect from "@/components/Upload//UploadSelect.vue";
+import UploadSelectExtension from "@/components/Upload/UploadSelectExtension.vue";
+
+type AgRowData = Record<string, unknown>;
+
+interface Props {
+    currentHistoryId: string;
+    collectionType: SampleSheetCollectionType;
+    columnDefinitions: SampleSheetColumnDefinitions;
+    initialElements: InitialElements;
+    busy: boolean;
+    extensions?: string[] | undefined;
+}
+
+const props = withDefaults(defineProps<Props>(), {
+    columnDefinitions: null,
+    extensions: undefined,
+});
+
+// Upload properties
+const { effectiveExtensions, listDbKeys } = useUploadConfigurations(props.extensions);
+const extension = ref("auto");
+const dbKey = ref("?");
+const listExtensions = computed(() => effectiveExtensions.value.filter((ext) => !ext.composite_files));
+
+const mode = computed<"uris" | "model_objects">(() => {
+    if ("elements" in props.initialElements) {
+        return "model_objects";
+    } else {
+        return "uris";
+    }
+});
+
+const showDbKey = computed(() => {
+    return mode.value === "uris";
+});
+
+const showExtension = computed(() => {
+    return mode.value === "uris";
+});
+
+const extraColumns = ref<ParsedFetchWorkbookColumn[]>([]);
+
+function initializeRowData(rowData: AgRowData[]) {
+    const initialElements = props.initialElements;
+    if ("rows" in initialElements) {
+        for (const parsedRow of initialElements.rows) {
+            const row: AgRowData = {};
+            for (const key in parsedRow) {
+                row[key] = parsedRow[key];
+            }
+            rowData.push(row);
+        }
+        extraColumns.value = initialElements.extra_columns || [];
+    } else if ("elements" in initialElements) {
+        for (const element of initialElements.elements) {
+            const row: AgRowData = { __model_object: element };
+            (props.columnDefinitions || []).forEach((colDef) => {
+                row[colDef.name] = initialValue(colDef);
+            });
+            rowData.push(row);
+        }
+    } else {
+        for (const initialElement of initialElements) {
+            const row: AgRowData = { url: initialElement[0] };
+            if (
+                props.collectionType === "sample_sheet:paired" ||
+                props.collectionType === "sample_sheet:paired_or_unpaired"
+            ) {
+                row["url_1"] = initialElement[1];
+                row["list_identifiers"] = initialElement[2] || "";
+            } else if (props.collectionType === "sample_sheet") {
+                row["list_identifiers"] = initialElement[1] || "";
+            } else {
+                throw new Error("Collection type not implemented yet");
+            }
+            (props.columnDefinitions || []).forEach((colDef) => {
+                row[colDef.name] = initialValue(colDef);
+            });
+            rowData.push(row);
+        }
+    }
+}
+
+// Example Row Data
+// const rowData = ref([{ "replicate number": 1, treatment: "treatment1", "is control?": true }]);
+const rowData = ref<AgRowData[]>([]);
+
+function initialize() {
+    rowData.value.splice(0, rowData.value.length);
+    initializeRowData(rowData.value);
+}
+
+const { gridApi, AgGridVue, onGridReady, theme } = useAgGrid(resize);
+
+function resize() {
+    if (gridApi.value) {
+        gridApi.value.sizeColumnsToFit();
+    }
+}
+
+watch(
+    () => {
+        props.initialElements;
+    },
+    () => {
+        initialize();
+        // is this block needed?
+        if (gridApi.value) {
+            const params = {
+                force: true,
+                suppressFlash: true,
+            };
+            gridApi.value!.refreshCells(params);
+        }
+    },
+    {
+        immediate: true,
+    }
+);
+
+function validate(value: string, columnDefinition: SampleSheetColumnDefinition): boolean {
+    if (columnDefinition.restrictions && !columnDefinition.restrictions.includes(value)) {
+        return false; // Invalid if not in restrictions
+    }
+    switch (columnDefinition.type) {
+        case "int":
+            return Number.isInteger(Number(value));
+        case "float":
+            return !isNaN(parseFloat(value));
+        case "boolean":
+            return value.toLowerCase() === "true" || value.toLowerCase() === "false";
+        case "string":
+        default:
+            if (!/^[\w\-_ ?]*$/.test(value)) {
+                return false;
+            }
+            return true;
+    }
+}
+
+function valueSetter(params: ValueSetterParams, columnDefinition: SampleSheetColumnDefinition): boolean {
+    const value = params.newValue;
+    if (validate(value, columnDefinition)) {
+        params.data[params.colDef.field!] = value;
+        return true;
+    } else {
+        return false;
+    }
+}
+
+// Generate Column Definitions from Schema
+function generateGridColumnDefs(columnDefinitions: SampleSheetColumnDefinitions): ColDef[] {
+    const columns: ColDef[] = [];
+    if (mode.value === "model_objects") {
+        columns.push({
+            headerName: "Identifier (Unique Name)",
+            field: "__model_object",
+            editable: false,
+            cellEditorParams: {},
+            valueFormatter: (params) => {
+                return params.data.__model_object.element_identifier;
+            },
+        });
+    } else {
+        const collectionType = props.collectionType;
+        if (collectionType === "sample_sheet") {
+            columns.push(uriColumn("URI", "url"), elementIdentifierColumn());
+        } else if (collectionType === "sample_sheet:paired") {
+            columns.push(
+                uriColumn("URI 1 (Forward)", "url"),
+                uriColumn("URI 2 (Reverse)", "url_1"),
+                elementIdentifierColumn()
+            );
+        } else if (collectionType === "sample_sheet:paired_or_unpaired") {
+            columns.push(
+                uriColumn("URI 1 (Forward)", "url"),
+                uriColumn("URI 2 (Optional/Reverse)", "url_1"),
+                elementIdentifierColumn()
+            );
+        } else {
+            throw new Error("Mode not implemented yet");
+        }
+    }
+    (columnDefinitions || []).forEach((colDef) => {
+        const baseDef: ColDef = {
+            headerName: colDef.name,
+            field: colDef.name,
+            editable: true,
+            cellEditorParams: {},
+            valueSetter: (params) => {
+                return valueSetter(params, colDef);
+            },
+        };
+
+        // Restrictions: Add dropdown editor for string type with restrictions
+        if (colDef.restrictions && colDef.type === "string") {
+            baseDef.cellEditor = "agSelectCellEditor";
+            baseDef.cellEditorParams = {
+                values: colDef.restrictions,
+            };
+        }
+
+        if (colDef.type === "element_identifier") {
+            const elementIdentifierOptions = () => {
+                if (colDef.optional) {
+                    return ["", ...elementIdentifiers.value];
+                } else {
+                    return elementIdentifiers.value;
+                }
+            };
+
+            baseDef.cellEditor = "agSelectCellEditor";
+            baseDef.cellEditorParams = () => {
+                return {
+                    values: elementIdentifierOptions(),
+                };
+            };
+        }
+
+        // Validators
+        baseDef.cellEditorParams.validate = (value: string) => validate(value, colDef);
+        columns.push(baseDef);
+    });
+    for (const extraColumn of extraColumns.value) {
+        const baseDef: ColDef = {
+            headerName: extraColumn.title,
+            field: extraColumn.type,
+            editable: true,
+            cellEditorParams: {},
+        };
+        columns.push(baseDef);
+    }
+    return columns;
+}
+
+function uriColumn(headerTitle: string, name: string): ColDef {
+    // dynamic field names so these don't conflict for paired?
+    const baseDef: ColDef = {
+        headerName: headerTitle,
+        field: name,
+        editable: false,
+        cellEditorParams: {},
+    };
+    return baseDef;
+}
+
+function elementIdentifierColumn(): ColDef {
+    const baseDef: ColDef = {
+        headerName: "Element identifier",
+        field: "list_identifiers",
+        editable: true,
+        cellEditorParams: {},
+        valueSetter: (params) => {
+            const newValue = params.newValue;
+            const rowIndex = params.node?.rowIndex ?? -1;
+            let isDuplicate = false;
+
+            params.api.forEachNode((node) => {
+                if (node.rowIndex !== rowIndex && node.data.element_identifier === newValue) {
+                    Toast.error("Element identifier values must be unique, supplied value already exists.");
+                    isDuplicate = true;
+                }
+            });
+
+            if (isDuplicate) {
+                return false; // Prevent duplicate values
+            } else {
+                params.data[params.colDef.field!] = newValue;
+                return true;
+            }
+        },
+    };
+    return baseDef;
+}
+
+// Column Definitions
+const columnDefs = computed(() => {
+    return generateGridColumnDefs(props.columnDefinitions);
+});
+
+// Default Column Properties
+const defaultColDef = ref<ColDef>({
+    editable: true,
+    sortable: true,
+    filter: true,
+    resizable: true,
+});
+
+const style = computed(() => {
+    return { width: "100%", height: "500px" };
+});
+
+const emit = defineEmits<{
+    (e: "workbook-contents", base64Content: string): void;
+    (e: "on-fetch-target", target: HdcaUploadTarget): void;
+    (e: "on-collection-create-payload", payload: CreateNewCollectionPayload): void;
+}>();
+
+async function handleWorkbook(base64Content: string) {
+    emit("workbook-contents", base64Content);
+}
+
+const { handleDrop, isDragging } = useWorkbookDropHandling(handleWorkbook);
+
+const rootClasses = computed(() => {
+    const classes: string[] = [theme, "dropzone"];
+    if (isDragging.value) {
+        classes.push("highlight");
+    }
+    return classes;
+});
+
+const fromWorkbookUpload = computed<Boolean>(() => {
+    return "rows" in props.initialElements;
+});
+
+function downloadSeededWorkbook() {
+    const initialRows = [];
+    const initialElements = props.initialElements;
+    if ("rows" in initialElements) {
+        // link won't appear - don't do anything
+    } else if ("elements" in initialElements) {
+        const hdca_id = initialElements.id;
+        downloadWorkbookForCollection(props.columnDefinitions, hdca_id);
+    } else {
+        for (const initialItem of initialElements) {
+            initialRows.push(initialItem);
+        }
+        downloadWorkbook(props.columnDefinitions, props.collectionType, initialRows);
+    }
+}
+
+const name = ref<string>("Sample Sheet for Workflow Input");
+if ("name" in props.initialElements) {
+    name.value = `${props.initialElements.name} (as sample sheet)` || name.value;
+}
+
+initialize();
+
+type ColumnDefinition = components["schemas"]["SampleSheetColumnDefinition"];
+
+function uriFromRow(row: AgRowData): string {
+    return row["url"] as string as string;
+}
+
+function uri2FromRow(row: AgRowData): string {
+    return row["url_1"] as string as string;
+}
+
+const elementIdentifiers = computed<string[]>(() => {
+    const identifiers: string[] = [];
+    for (const row of rowData.value) {
+        const elementIdentifier = elementIdentifierFromRow(row);
+        if (elementIdentifier) {
+            identifiers.push(elementIdentifier);
+        }
+    }
+    return identifiers;
+});
+
+function elementIdentifierFromRow(row: AgRowData): string {
+    if (mode.value === "model_objects") {
+        return (row["__model_object"] as { element_identifier: string }).element_identifier;
+    } else {
+        return row["list_identifiers"] as string;
+    }
+}
+
+function attachExtraMetadata(row: AgRowData, urlElement: UrlDataElement, typeIndex: number) {
+    // Apply extra metadata from the row to the UrlDataElement
+
+    // typeIndex is 0 for all elements of a simple sample sheet and for the forward element
+    // of all paired sample sheets. typeIndex is 1 for the reverse element of paired sample sheets.
+    if (extraColumns.value.length > 0) {
+        for (const extraColumn of extraColumns.value) {
+            const extraValue = row[extraColumn.type] as string | undefined;
+            const extraColumnType = extraColumn.type;
+            const extraColumnTypeIndex = extraColumn.type_index ?? 0;
+            if (extraColumnType == "dbkey") {
+                urlElement.dbkey = extraValue || dbKey.value || "?";
+            } else if (extraColumnType == "file_type") {
+                urlElement.ext = extraValue || extension.value || "auto";
+            } else if (extraColumnType == "name" && extraValue) {
+                urlElement.name = extraValue;
+            } else if (extraColumnType == "tags" && extraValue) {
+                urlElement.tags = extraValue.split(",").map((tag) => tag.trim());
+            } else if (extraColumnType == "info") {
+                urlElement.info = extraValue;
+            } else if (extraColumnType == "hash_md5" && typeIndex === extraColumnTypeIndex && extraValue) {
+                urlElement.MD5 = extraValue;
+            } else if (extraColumnType == "hash_sha1" && typeIndex === extraColumnTypeIndex && extraValue) {
+                urlElement["SHA-1"] = extraValue;
+            } else if (extraColumnType == "hash_sha256" && typeIndex === extraColumnTypeIndex && extraValue) {
+                urlElement["SHA-256"] = extraValue;
+            } else if (extraColumnType == "hash_sha512" && typeIndex === extraColumnTypeIndex && extraValue) {
+                urlElement["SHA-512"] = extraValue;
+            }
+        }
+    }
+}
+
+function urlDataElementWithSelectedMetadata(elementIdentifier: string, uri: string): UrlDataElement {
+    const urlElement = urlDataElement(elementIdentifier, uri);
+    urlElement.dbkey = dbKey.value || "?";
+    urlElement.ext = extension.value || "auto";
+    return urlElement;
+}
+
+async function attemptCreateViaFetch() {
+    const columnDefinitions: ColumnDefinition[] = props.columnDefinitions ?? [];
+    const elements: (UrlDataElement | NestedElement)[] = [];
+    if (props.collectionType == "sample_sheet") {
+        for (const row of rowData.value) {
+            const elementIdentifier = elementIdentifierFromRow(row);
+            const elementRow = toApiRows(row);
+            const uri = uriFromRow(row);
+            const element = urlDataElementWithSelectedMetadata(elementIdentifier, uri);
+            attachExtraMetadata(row, element, 0);
+            element.row = elementRow;
+            elements.push(element);
+        }
+    } else if (
+        props.collectionType == "sample_sheet:paired" ||
+        props.collectionType == "sample_sheet:paired_or_unpaired"
+    ) {
+        for (const row of rowData.value) {
+            const elementIdentifier = elementIdentifierFromRow(row);
+            const elementRow = toApiRows(row);
+            const uri = uriFromRow(row);
+            const uri2 = uri2FromRow(row);
+            let childElements;
+            if (uri2) {
+                const forwardElement = urlDataElementWithSelectedMetadata("forward", uri);
+                attachExtraMetadata(row, forwardElement, 0);
+                const reverseElement = urlDataElementWithSelectedMetadata("reverse", uri2);
+                attachExtraMetadata(row, reverseElement, 1);
+                childElements = [forwardElement, reverseElement];
+            } else {
+                if (props.collectionType == "sample_sheet:paired") {
+                    // Do something better with this exception ideally.
+                    throw Error("Unpaired dataset discovered - cannot build collection");
+                }
+                const unpairedElement = urlDataElementWithSelectedMetadata("unpaired", uri);
+                attachExtraMetadata(row, unpairedElement, 0);
+                childElements = [unpairedElement];
+            }
+            const element = nestedElement(elementIdentifier, childElements);
+            element.row = elementRow;
+            elements.push(element);
+        }
+    }
+    const target: HdcaUploadTarget = {
+        destination: { type: "hdca" },
+        collection_type: props.collectionType,
+        elements: elements,
+        column_definitions: columnDefinitions,
+        auto_decompress: false, // why is this needed?
+        name: name.value,
+    };
+    emit("on-fetch-target", target);
+}
+
+function elementsForCreateApi() {
+    const identifiers: CollectionElementIdentifiers = [];
+    const collectionType = props.collectionType;
+    if (collectionType == "sample_sheet") {
+        for (const row of rowData.value) {
+            const elementIdentifier = elementIdentifierFromRow(row);
+            const modelObject = row["__model_object"] as HDAObject;
+            const identifier = {
+                name: elementIdentifier,
+                src: "hda" as "hda",
+                id: modelObject.id,
+            };
+            identifiers.push(identifier);
+        }
+    } else if (collectionType == "sample_sheet:paired" || collectionType == "sample_sheet:paired_or_unpaired") {
+        // TODO:
+        for (const row of rowData.value) {
+            const elementIdentifier = elementIdentifierFromRow(row);
+            const element = row["__model_object"] as DCESummary;
+            const childCollection = element.object as DCObject;
+            const rowElements = [];
+            for (const childElement of childCollection.elements) {
+                const childIdentifier = {
+                    name: childElement.element_identifier,
+                    src: "hda" as "hda",
+                    id: childElement.object!.id,
+                };
+                rowElements.push(childIdentifier);
+            }
+            const entry = {
+                name: elementIdentifier,
+                collection_type: childCollection.collection_type,
+                src: "new_collection" as "new_collection",
+                element_identifiers: rowElements,
+            };
+            identifiers.push(entry);
+        }
+    } else {
+        console.log("sample_sheet:record not yet implemented, this will fail");
+    }
+    return identifiers;
+}
+
+async function attemptCreateViaExistingObjects() {
+    const identifiers: CollectionElementIdentifiers = elementsForCreateApi();
+    const collectionType = props.collectionType;
+    const hide_source_items = false;
+    const payload = createPayload(name.value, collectionType, identifiers, hide_source_items);
+    const rows: Record<string, SampleSheetColumnValueT[]> = {};
+    for (const row of rowData.value) {
+        const elementRow = toApiRows(row);
+        rows[elementIdentifierFromRow(row)] = elementRow;
+    }
+    payload.rows = rows;
+    emit("on-collection-create-payload", payload);
+}
+
+function toApiRows(row: AgRowData) {
+    const elementRow: SampleSheetColumnValueT[] = [];
+    (props.columnDefinitions || []).forEach((colDef) => {
+        elementRow.push(row[colDef.name] as SampleSheetColumnValueT);
+    });
+    return elementRow;
+}
+
+const { createPayload } = useCollectionCreation();
+
+async function attemptCreate() {
+    if (mode.value === "model_objects") {
+        attemptCreateViaExistingObjects();
+    } else {
+        attemptCreateViaFetch();
+    }
+}
+
+function updateExtension(newExtension: string) {
+    extension.value = newExtension;
+}
+
+function updateDbKey(newDbKey: string) {
+    dbKey.value = newDbKey;
+}
+
+defineExpose({ attemptCreate });
+</script>
+
+<template>
+    <div
+        :class="rootClasses"
+        @drop.prevent="handleDrop"
+        @dragover.prevent="isDragging = true"
+        @dragleave.prevent="isDragging = false">
+        <AgGridVue
+            :row-data="rowData"
+            :column-defs="columnDefs"
+            :default-col-def="defaultColDef"
+            :style="style"
+            @gridReady="onGridReady" />
+        <BRow align-h="center" style="margin-top: 10px">
+            <BCol v-if="showExtension" cols="4">
+                <span class="upload-footer-title">Type</span>
+                <UploadSelectExtension
+                    class="upload-footer-extension"
+                    :value="extension"
+                    :disabled="busy"
+                    :list-extensions="listExtensions"
+                    @input="updateExtension">
+                </UploadSelectExtension>
+            </BCol>
+            <BCol v-if="showDbKey" cols="4">
+                <span class="upload-footer-title">Reference</span>
+                <UploadSelect
+                    class="upload-footer-genome"
+                    :value="dbKey"
+                    :disabled="busy"
+                    :options="listDbKeys"
+                    what="reference"
+                    placeholder="Select Reference"
+                    @input="updateDbKey" />
+            </BCol>
+            <BCol cols="4">
+                <BInputGroup prepend="Collection Name" class="mb-2" size="sm">
+                    <BFormInput
+                        v-model="name"
+                        :placeholder="localize('Enter a name for your new sample sheet')"
+                        size="sm"
+                        required />
+                </BInputGroup>
+            </BCol>
+        </BRow>
+        <div class="text-center below-grid-link">
+            <BLink v-if="!fromWorkbookUpload" @click="downloadSeededWorkbook">
+                <FontAwesomeIcon size="xl" :icon="faDownload" />
+                Download this as spreadsheet and fill it in outside of Galaxy.
+            </BLink>
+        </div>
+    </div>
+</template>
+
+<style scoped>
+.below-grid-link {
+    padding: 7px;
+}
+</style>
diff --git a/client/src/components/Collections/sheet/workbooks.ts b/client/src/components/Collections/sheet/workbooks.ts
new file mode 100644
index 00000000000..9d8895338ee
--- /dev/null
+++ b/client/src/components/Collections/sheet/workbooks.ts
@@ -0,0 +1,105 @@
+import { GalaxyApi, type SampleSheetColumnDefinition, type SampleSheetColumnDefinitions } from "@/api";
+import type { SampleSheetCollectionType } from "@/api/datasetCollections";
+import { stripExtension } from "@/components/Collections/common/stripExtension";
+import type { PrefixColumnsType } from "@/components/Collections/wizard/types";
+import { withPrefix } from "@/utils/redirect";
+
+export function getDownloadWorkbookUrl(
+    columnDefinitions: SampleSheetColumnDefinitions,
+    collectionType: SampleSheetCollectionType,
+    initialRows?: string[][]
+) {
+    const columnDefinitionsJson = JSON.stringify(columnDefinitions);
+    const columnDefinitionsJsonBase64 = Buffer.from(columnDefinitionsJson).toString("base64");
+    let url = withPrefix(
+        `/api/sample_sheet_workbook/generate?collection_type=${collectionType}&column_definitions=${columnDefinitionsJsonBase64}`
+    );
+    if (initialRows) {
+        const initialRowsJson = JSON.stringify(initialRows);
+        const initialRowsJsonBase64 = Buffer.from(initialRowsJson).toString("base64");
+        url = `${url}&prefix_values=${initialRowsJsonBase64}`;
+    }
+    return url;
+}
+
+export function getDownloadWorkbookUrlForCollection(column_definitions: SampleSheetColumnDefinitions, hdca_id: string) {
+    const columnDefinitionsJson = JSON.stringify(column_definitions);
+    const columnDefinitionsJsonBase64 = Buffer.from(columnDefinitionsJson).toString("base64");
+    const url = withPrefix(
+        `/api/dataset_collections/${hdca_id}/sample_sheet_workbook/generate?column_definitions=${columnDefinitionsJsonBase64}`
+    );
+    return url;
+}
+
+export function downloadWorkbook(
+    columnDefinitions: SampleSheetColumnDefinitions,
+    collectionType: SampleSheetCollectionType,
+    initialRows?: string[][]
+) {
+    const url = getDownloadWorkbookUrl(columnDefinitions, collectionType, initialRows);
+    window.location.assign(url);
+}
+
+export function downloadWorkbookForCollection(columnDefinitions: SampleSheetColumnDefinitions, hdca_id: string) {
+    const url = getDownloadWorkbookUrlForCollection(columnDefinitions, hdca_id);
+    window.location.assign(url);
+}
+
+export function initialValue(columnDefinition: SampleSheetColumnDefinition) {
+    const defaultValue = columnDefinition.default_value;
+    if (defaultValue === undefined) {
+        switch (columnDefinition.type) {
+            case "int":
+                return columnDefinition.optional ? null : 0;
+            case "float":
+                return columnDefinition.optional ? null : 0.0;
+            case "boolean":
+                // TODO!!!
+                return false;
+            case "string":
+            default:
+                return "";
+        }
+    } else {
+        return defaultValue;
+    }
+}
+
+export function parseWorkbook(
+    collectionType: SampleSheetCollectionType,
+    columnDefinitions: SampleSheetColumnDefinitions | undefined,
+    prefixColumnTypes: PrefixColumnsType,
+    base64Content: string
+) {
+    const parseBody = {
+        collection_type: collectionType,
+        column_definitions: columnDefinitions || [],
+        content: base64Content,
+        prefix_columns_type: prefixColumnTypes,
+    };
+    return GalaxyApi().POST("/api/sample_sheet_workbook/parse", {
+        body: parseBody,
+    });
+}
+
+export function withAutoListIdentifiers(rows: string[][]): string[][] {
+    const seenBasenames = new Map<string, number>();
+    return rows.map((row) => {
+        console.log(row);
+        if (row.length === 1 && row[0]) {
+            const uri = row[0];
+            let basename = uri.split("/").pop() || uri;
+
+            if (seenBasenames.has(basename)) {
+                const count = seenBasenames.get(basename)! + 1;
+                seenBasenames.set(basename, count);
+                basename = `${basename}_${count}`;
+            } else {
+                seenBasenames.set(basename, 1);
+            }
+
+            return [uri, stripExtension(basename)];
+        }
+        return row;
+    });
+}
diff --git a/client/src/components/Collections/usePairing.ts b/client/src/components/Collections/usePairing.ts
index 5bf4d27b2bc..25f990711bb 100644
--- a/client/src/components/Collections/usePairing.ts
+++ b/client/src/components/Collections/usePairing.ts
@@ -1,26 +1,32 @@
 import { ref } from "vue";
 
+import type { GenericPair } from "@/components/History/adapters/buildCollectionModal";
+
 import { autoPairWithCommonFilters, type HasName } from "./pairing";
 
 import AutoPairing from "./common/AutoPairing.vue";
 
-export function useAutoPairing() {
+export function useAutoPairing<T extends HasName>() {
     const currentForwardFilter = ref("");
     const currentReverseFilter = ref("");
     const countPaired = ref(-1);
     const countUnpaired = ref(-1);
+    const pairs = ref<GenericPair<T>[]>();
+    const unpaired = ref<T[]>();
 
     function onFilters(forwardFilter: string, reverseFilter: string) {
         currentForwardFilter.value = forwardFilter;
         currentReverseFilter.value = reverseFilter;
     }
 
-    function autoPair(selectedItems: HasName[]) {
-        const summary = autoPairWithCommonFilters(selectedItems, true);
-        currentForwardFilter.value = summary.forwardFilter || "";
-        currentReverseFilter.value = summary.reverseFilter || "";
-        countPaired.value = summary.pairs?.length || 0;
-        countUnpaired.value = summary.unpaired.length;
+    function autoPair(selectedItems: T[]) {
+        const thisSummary = autoPairWithCommonFilters(selectedItems, true);
+        pairs.value = thisSummary.pairs;
+        unpaired.value = thisSummary.unpaired;
+        currentForwardFilter.value = thisSummary.forwardFilter || "";
+        currentReverseFilter.value = thisSummary.reverseFilter || "";
+        countPaired.value = thisSummary.pairs?.length || 0;
+        countUnpaired.value = thisSummary.unpaired.length;
     }
 
     return {
@@ -31,5 +37,7 @@ export function useAutoPairing() {
         currentForwardFilter,
         currentReverseFilter,
         onFilters,
+        pairs,
+        unpaired,
     };
 }
diff --git a/client/src/components/Collections/wizard/SelectCollection.vue b/client/src/components/Collections/wizard/SelectCollection.vue
new file mode 100644
index 00000000000..7de1c7ef51e
--- /dev/null
+++ b/client/src/components/Collections/wizard/SelectCollection.vue
@@ -0,0 +1,53 @@
+<script setup lang="ts">
+import { BAlert, BCard, BCardTitle } from "bootstrap-vue";
+import { ref, watch } from "vue";
+
+import type { ExtendedCollectionType } from "@/components/Form/Elements/FormData/types";
+import type { SelectionItem } from "@/components/SelectionDialog/selectionTypes";
+import { datasetCollectionDialog } from "@/utils/dataModals";
+
+const emit = defineEmits(["onChange", "onError"]);
+const errorMessage = ref<string | undefined>(undefined);
+const targetCollection = ref<string | undefined>(undefined);
+
+interface Props {
+    collectionType: string;
+    extendedCollectionType: ExtendedCollectionType;
+}
+
+const props = defineProps<Props>();
+
+function inputDialog() {
+    const collectionType = props.collectionType;
+    datasetCollectionDialog(
+        (data: SelectionItem) => {
+            targetCollection.value = data.id;
+        },
+        {
+            // TODO: use this in that dialog.
+            collectionType: collectionType,
+        }
+    );
+}
+
+watch(targetCollection, () => {
+    emit("onChange", targetCollection.value);
+});
+</script>
+
+<template>
+    <BCard
+        class="wizard-selection-card"
+        data-description="selection collection card"
+        border-variant="primary"
+        @click="inputDialog">
+        <BCardTitle>
+            <b>Select collection</b>
+        </BCardTitle>
+        <div>
+            <BAlert v-if="errorMessage" show variant="danger">{{ errorMessage }}</BAlert>
+            Select a dataset collection, the contents will be loaded as tabular data and made available for supplying
+            sample sheet metadata.
+        </div>
+    </BCard>
+</template>
diff --git a/client/src/components/Collections/wizard/SourceFromCollection.vue b/client/src/components/Collections/wizard/SourceFromCollection.vue
new file mode 100644
index 00000000000..6025089b31a
--- /dev/null
+++ b/client/src/components/Collections/wizard/SourceFromCollection.vue
@@ -0,0 +1,29 @@
+<script setup lang="ts">
+import { BCard, BCardTitle } from "bootstrap-vue";
+
+import { borderVariant } from "@/components/Common/Wizard/utils";
+
+interface Props {
+    selected: boolean;
+}
+
+defineProps<Props>();
+
+const emit = defineEmits(["select"]);
+</script>
+
+<template>
+    <BCard
+        data-import-source-from="collection"
+        class="wizard-selection-card"
+        :border-variant="borderVariant(selected)"
+        @click="emit('select', 'collection')">
+        <BCardTitle>
+            <b>An Existing Collection</b>
+        </BCardTitle>
+        <div>
+            <!-- TODO: replace collection with an english expression -->
+            Fill in sample sheet data from an existing collection.
+        </div>
+    </BCard>
+</template>
diff --git a/client/src/components/Collections/wizard/UploadSampleSheet.vue b/client/src/components/Collections/wizard/UploadSampleSheet.vue
new file mode 100644
index 00000000000..42ac715c8cf
--- /dev/null
+++ b/client/src/components/Collections/wizard/UploadSampleSheet.vue
@@ -0,0 +1,39 @@
+<script setup lang="ts">
+import { BCardGroup } from "bootstrap-vue";
+import { computed } from "vue";
+
+import type { SampleSheetCollectionType } from "@/api/datasetCollections";
+import { getDownloadWorkbookUrl } from "@/components/Collections/sheet/workbooks";
+import type { ExtendedCollectionType } from "@/components/Form/Elements/FormData/types";
+
+import CardDownloadWorkbook from "./CardDownloadWorkbook.vue";
+import CardEditWorkbook from "./CardEditWorkbook.vue";
+import CardUploadWorkbook from "./CardUploadWorkbook.vue";
+
+async function handleWorkbook(base64Content: string) {
+    emit("workbookContents", base64Content);
+}
+
+interface Props {
+    collectionType: SampleSheetCollectionType;
+    extendedCollectionType: ExtendedCollectionType;
+}
+
+const props = defineProps<Props>();
+
+const emit = defineEmits(["workbookContents"]);
+
+const generateWorkbookHref = computed(() => {
+    return getDownloadWorkbookUrl(props.extendedCollectionType.columnDefinitions!, props.collectionType);
+});
+</script>
+
+<template>
+    <div class="generate-workbook">
+        <BCardGroup deck>
+            <CardDownloadWorkbook :generate-workbook-link="generateWorkbookHref" />
+            <CardEditWorkbook />
+            <CardUploadWorkbook @workbookContents="handleWorkbook" />
+        </BCardGroup>
+    </div>
+</template>
diff --git a/client/src/components/Collections/wizard/fetchWorkbooks.test.ts b/client/src/components/Collections/wizard/fetchWorkbooks.test.ts
index 1cc0946d842..8c615a62978 100644
--- a/client/src/components/Collections/wizard/fetchWorkbooks.test.ts
+++ b/client/src/components/Collections/wizard/fetchWorkbooks.test.ts
@@ -1,5 +1,6 @@
-import { forBuilder } from "./fetchWorkbooks";
-import type { ParsedFetchWorkbook } from "./types";
+import { columnTitleToTargetType, forBuilder } from "./fetchWorkbooks";
+import SPECIFICATIONS from "./rule_target_column_specification.yml";
+import type { ColumnMappingType, ParsedFetchWorkbook } from "./types";
 
 describe("forBuilder", () => {
     it("should return the correct ForBuilderResponse for a valid ParsedFetchWorkbook", () => {
@@ -31,3 +32,23 @@ describe("forBuilder", () => {
         ]);
     });
 });
+
+interface SpecificationTest {
+    doc?: string;
+    column_header: string;
+    maps_to: ColumnMappingType | null;
+}
+
+describe("column name to rule builder mapping targets", () => {
+    it("should follow the specifications laid out in rule_target_column_specification.yml", () => {
+        SPECIFICATIONS.forEach((spec: SpecificationTest) => {
+            const { column_header, maps_to } = spec;
+            const columnType = columnTitleToTargetType(column_header);
+            if (maps_to === null) {
+                expect(columnType).toBeUndefined();
+            } else {
+                expect(columnType).toBe(maps_to);
+            }
+        });
+    });
+});
diff --git a/client/src/components/Collections/wizard/fetchWorkbooks.ts b/client/src/components/Collections/wizard/fetchWorkbooks.ts
index 64ac80a2350..774e1668f8b 100644
--- a/client/src/components/Collections/wizard/fetchWorkbooks.ts
+++ b/client/src/components/Collections/wizard/fetchWorkbooks.ts
@@ -77,3 +77,60 @@ function buildInitialMapping(parsedWorkbook: ParsedFetchWorkbook): RuleBuilderMa
     }
     return columnMappings;
 }
+
+const COLUMN_TITLE_PREFIXES: Record<string, ColumnMappingType> = {
+    name: "name",
+    listname: "collection_name",
+    collectionname: "collection_name",
+    uri: "url",
+    url: "url",
+    urldeferred: "url_deferred",
+    deferredurl: "url_deferred",
+    genome: "dbkey",
+    dbkey: "dbkey",
+    filetype: "file_type",
+    extension: "file_type",
+    info: "info",
+    tag: "tags",
+    grouptag: "group_tags",
+    nametag: "name_tag",
+    listidentifier: "list_identifiers",
+    pairedidentifier: "paired_identifier",
+    hashmd5sum: "hash_md5",
+    hashmd5: "hash_md5",
+    md5sum: "hash_md5",
+    md5: "hash_md5",
+    sha1hash: "hash_sha1",
+    hashsha1sum: "hash_sha1",
+    hashsha1: "hash_sha1",
+    sha1sum: "hash_sha1",
+    sha1: "hash_sha1",
+    sha256hash: "hash_sha256",
+    hashsha256sum: "hash_sha256",
+    hashsha256: "hash_sha256",
+    sha256sum: "hash_sha256",
+    sha256: "hash_sha256",
+    sha512hash: "hash_sha512",
+    hashsha512sum: "hash_sha512",
+    hashsha512: "hash_sha512",
+    sha512sum: "hash_sha512",
+    sha512: "hash_sha512",
+};
+
+export function columnTitleToTargetType(columnTitle: string): ColumnMappingType | undefined {
+    let normalizedTitle = columnTitle.toLowerCase().replace(/[\s()\-_]|optional/g, "");
+    if (!(normalizedTitle in COLUMN_TITLE_PREFIXES)) {
+        for (const key of Object.keys(COLUMN_TITLE_PREFIXES)) {
+            if (normalizedTitle.startsWith(key) || normalizedTitle.endsWith(key)) {
+                normalizedTitle = key;
+                break;
+            }
+        }
+    }
+
+    if (!(normalizedTitle in COLUMN_TITLE_PREFIXES)) {
+        return undefined;
+    }
+
+    return COLUMN_TITLE_PREFIXES[normalizedTitle] as string;
+}
diff --git a/client/src/components/Collections/wizard/rule_target_column_specification.yml b/client/src/components/Collections/wizard/rule_target_column_specification.yml
new file mode 120000
index 00000000000..31c07343c38
--- /dev/null
+++ b/client/src/components/Collections/wizard/rule_target_column_specification.yml
@@ -0,0 +1 @@
+../../../../../lib/galaxy/model/dataset_collections/rule_target_column_specification.yml
\ No newline at end of file
diff --git a/client/src/components/Collections/wizard/types.ts b/client/src/components/Collections/wizard/types.ts
index 7ce84043291..1fa99985a6f 100644
--- a/client/src/components/Collections/wizard/types.ts
+++ b/client/src/components/Collections/wizard/types.ts
@@ -1,3 +1,4 @@
+import type { HDCADetailed } from "@/api";
 import type { components } from "@/api/schema";
 import type { MAPPING_TARGETS } from "@/components/RuleBuilder/rule-definitions";
 
@@ -15,6 +16,11 @@ export type ParsedFetchWorkbookForCollectionCollectionType =
     components["schemas"]["ParsedFetchWorkbookForCollections"]["collection_type"];
 
 export type RawRowData = string[][];
+export type ParsedSampleSheetWorkbook = components["schemas"]["ParsedWorkbook"];
+export type ParsedWorkbookForCollection = components["schemas"]["ParsedWorkbookForCollection"];
+export type AnyParsedSampleSheetWorkbook = ParsedSampleSheetWorkbook | ParsedWorkbookForCollection;
+export type InitialElements = RawRowData | HDCADetailed | ParsedSampleSheetWorkbook | ParsedWorkbookForCollection;
+export type PrefixColumnsType = "URI" | "ModelObjects";
 
 // types and helpers around initializing the rule builder with data
 export type RuleSelectionType = "raw" | "remote_files";
diff --git a/client/src/components/Form/Elements/FormData/FormData.vue b/client/src/components/Form/Elements/FormData/FormData.vue
index b00ad32109e..f280fa660f1 100644
--- a/client/src/components/Form/Elements/FormData/FormData.vue
+++ b/client/src/components/Form/Elements/FormData/FormData.vue
@@ -26,7 +26,7 @@ import { useUid } from "@/composables/utils/uid";
 import { type EventData, useEventStore } from "@/stores/eventStore";
 import { orList } from "@/utils/strings";
 
-import type { DataOption } from "./types";
+import type { DataOption, ExtendedCollectionType } from "./types";
 import { containsDataOption } from "./types";
 import { BATCH, SOURCE, VARIANTS } from "./variants";
 
@@ -60,6 +60,7 @@ const props = withDefaults(
         tag?: string;
         userDefinedTitle?: string;
         workflowRun?: boolean;
+        extendedCollectionType: ExtendedCollectionType;
     }>(),
     {
         loading: false,
@@ -72,6 +73,7 @@ const props = withDefaults(
         flavor: undefined,
         tag: undefined,
         userDefinedTitle: undefined,
+        extendedCollectionType: () => ({} as ExtendedCollectionType),
     }
 );
 
@@ -628,6 +630,10 @@ const collectionTypesWithBuilders: CollectionBuilderType[] = [
     "list:list",
     "list:list:paired",
     "list:paired_or_unpaired",
+    "sample_sheet",
+    "sample_sheet:paired",
+    "sample_sheet:paired_or_unpaired",
+    "sample_sheet:record",
 ];
 
 /** Allowed collection types for collection creation */
@@ -932,6 +938,7 @@ const noOptionsWarningMessage = computed(() => {
             :can-browse="canBrowse"
             :extensions="props.extensions"
             :collection-type="currentCollectionTypeTab"
+            :extended-collection-type="extendedCollectionType"
             :step-title="props.userDefinedTitle"
             :workflow-tab.sync="workflowTab"
             @focus="$emit('focus')"
diff --git a/client/src/components/Form/Elements/FormData/FormDataWorkflowRunTabs.vue b/client/src/components/Form/Elements/FormData/FormDataWorkflowRunTabs.vue
index 7edfe198196..e75798bebbe 100644
--- a/client/src/components/Form/Elements/FormData/FormDataWorkflowRunTabs.vue
+++ b/client/src/components/Form/Elements/FormData/FormDataWorkflowRunTabs.vue
@@ -9,7 +9,7 @@ import type { CollectionBuilderType } from "@/components/History/adapters/buildC
 import { useUploadConfigurations } from "@/composables/uploadConfigurations";
 import { useHistoryStore } from "@/stores/historyStore";
 
-import type { DataOption } from "./types";
+import type { DataOption, ExtendedCollectionType } from "./types";
 import type { VariantInterface } from "./variants";
 
 import CollectionCreatorIndex from "@/components/Collections/CollectionCreatorIndex.vue";
@@ -31,6 +31,7 @@ const props = defineProps<{
     collectionType?: CollectionBuilderType;
     stepTitle?: string;
     workflowTab: string;
+    extendedCollectionType: ExtendedCollectionType;
 }>();
 
 const emit = defineEmits<{
@@ -141,6 +142,7 @@ watch(
                 not-modal
                 :extensions="props.extensions && props.extensions.filter((ext) => ext !== 'data')"
                 :suggested-name="props.stepTitle"
+                :extended-collection-type="extendedCollectionType"
                 @created-collection="collectionCreated"
                 @on-hide="goToFirstWorkflowTab" />
         </div>
diff --git a/client/src/components/Form/Elements/FormData/collections.ts b/client/src/components/Form/Elements/FormData/collections.ts
index 1bee57b93fe..a4378fa0cba 100644
--- a/client/src/components/Form/Elements/FormData/collections.ts
+++ b/client/src/components/Form/Elements/FormData/collections.ts
@@ -14,6 +14,14 @@ export function buildersForCollectionType(collectionType: CollectionType): Colle
         return ["list:paired"];
     } else if (collectionType == "list:paired_or_unpaired") {
         return ["list", "list:paired", "list:paired_or_unpaired"];
+    } else if (collectionType == "sample_sheet") {
+        return ["sample_sheet"];
+    } else if (collectionType == "sample_sheet:paired") {
+        return ["sample_sheet:paired"];
+    } else if (collectionType == "sample_sheet:paired_or_unpaired") {
+        return ["sample_sheet:paired_or_unpaired"];
+    } else if (collectionType == "sample_sheet:record") {
+        return ["sample_sheet:record"];
     } else {
         return [];
     }
diff --git a/client/src/components/Form/Elements/FormData/types.ts b/client/src/components/Form/Elements/FormData/types.ts
index 18789ed40ab..ce098473fb4 100644
--- a/client/src/components/Form/Elements/FormData/types.ts
+++ b/client/src/components/Form/Elements/FormData/types.ts
@@ -2,6 +2,7 @@
  * The Uri types here are based on `DataOrCollectionRequest` defined in
  * `lib/galaxy/tool_util_models/parameters.py`.
  */
+import type { FieldDict, SampleSheetColumnDefinition } from "@/api";
 
 interface DatasetHash {
     hash_function: "MD5" | "SHA-1" | "SHA-256" | "SHA-512";
@@ -101,3 +102,8 @@ export function itemUniqueKey(item: DataOption): string {
 export function containsDataOption(items: DataOption[], item: DataOption | null): boolean {
     return item !== null && items.some((i) => itemUniqueKey(i) === itemUniqueKey(item));
 }
+
+export type ExtendedCollectionType = {
+    columnDefinitions?: SampleSheetColumnDefinition[] | undefined;
+    fields?: FieldDict[] | undefined;
+};
diff --git a/client/src/components/Form/FormElement.vue b/client/src/components/Form/FormElement.vue
index 22368634a6c..8af32ecd5f6 100644
--- a/client/src/components/Form/FormElement.vue
+++ b/client/src/components/Form/FormElement.vue
@@ -9,7 +9,7 @@ import { computed, ref, useAttrs } from "vue";
 
 import { linkify } from "@/utils/utils";
 
-import { isDataUri } from "./Elements/FormData/types";
+import { type ExtendedCollectionType, isDataUri } from "./Elements/FormData/types";
 import type { FormParameterAttributes, FormParameterTypes, FormParameterValue } from "./parameterTypes";
 
 import FormBoolean from "./Elements/FormBoolean.vue";
@@ -267,6 +267,14 @@ function addTempFocus() {
 function onAlert(value: string | undefined) {
     formAlert.value = value;
 }
+
+const extendedCollectionType = computed<ExtendedCollectionType>(() => {
+    const attrsValue = attrs.value;
+    return {
+        columnDefinitions: attrsValue.column_definitions ?? undefined,
+        fields: attrsValue.fields ?? undefined,
+    };
+});
 </script>
 
 <template>
@@ -435,6 +443,7 @@ function onAlert(value: string | undefined) {
                     :user-defined-title="userDefinedTitle"
                     :type="formDataField"
                     :collection-types="attrs.collection_types"
+                    :extended-collection-type="extendedCollectionType"
                     :workflow-run="props.workflowRun"
                     @alert="onAlert"
                     @focus="addTempFocus" />
diff --git a/client/src/components/History/CurrentHistory/HistoryOperations/SelectionOperations.vue b/client/src/components/History/CurrentHistory/HistoryOperations/SelectionOperations.vue
index eb9d1f84aca..c45db08edd6 100644
--- a/client/src/components/History/CurrentHistory/HistoryOperations/SelectionOperations.vue
+++ b/client/src/components/History/CurrentHistory/HistoryOperations/SelectionOperations.vue
@@ -137,6 +137,7 @@
             v-if="collectionModalType"
             :history-id="history.id"
             :collection-type="collectionModalType"
+            :file-sources-configured="config.file_sources_configured"
             :filter-text="filterText"
             :selected-items="collectionSelection"
             :show.sync="collectionModalShow"
diff --git a/client/src/components/History/adapters/buildCollectionModal.ts b/client/src/components/History/adapters/buildCollectionModal.ts
index eaba9ffcf5d..006723b45d7 100644
--- a/client/src/components/History/adapters/buildCollectionModal.ts
+++ b/client/src/components/History/adapters/buildCollectionModal.ts
@@ -26,7 +26,11 @@ export type CollectionBuilderType =
     | "rules"
     | "list:paired_or_unpaired"
     | "list:list"
-    | "list:list:paired";
+    | "list:list:paired"
+    | "sample_sheet"
+    | "sample_sheet:paired"
+    | "sample_sheet:paired_or_unpaired"
+    | "sample_sheet:record";
 
 interface HasName {
     name: string | null;
@@ -43,6 +47,7 @@ export const COLLECTION_TYPE_TO_LABEL: Record<string, string> = {
     "list:paired": "list of pairs",
     "list:paired_or_unpaired": "mixed list of paired and unpaired",
     paired: "dataset pair",
+    sample_sheet: "sample sheet derived",
 };
 
 export type DatasetPair = GenericPair<HDASummary>;
diff --git a/client/src/components/Libraries/LibraryFolder/TopToolbar/FolderTopBar.vue b/client/src/components/Libraries/LibraryFolder/TopToolbar/FolderTopBar.vue
index cdfdfc83f01..e1c532b56eb 100644
--- a/client/src/components/Libraries/LibraryFolder/TopToolbar/FolderTopBar.vue
+++ b/client/src/components/Libraries/LibraryFolder/TopToolbar/FolderTopBar.vue
@@ -444,6 +444,7 @@ function onAddDatasetsDirectory(selectedDatasets: Record<string, string | boolea
             v-if="collectionModalType && collectionHistoryId"
             :history-id="collectionHistoryId"
             :collection-type="collectionModalType"
+            :extended-collection-type="{}"
             :selected-items="collectionSelection"
             :show.sync="collectionModalShow"
             default-hide-source-items />
diff --git a/client/src/components/RuleBuilder/rule-definitions.js b/client/src/components/RuleBuilder/rule-definitions.js
index abf36951413..ce1a935145b 100644
--- a/client/src/components/RuleBuilder/rule-definitions.js
+++ b/client/src/components/RuleBuilder/rule-definitions.js
@@ -225,6 +225,35 @@ const RULES = {
             return { data, columns };
         },
     },
+    add_column_from_sample_sheet_index: {
+        title: _l("Add Column from Sample Sheet Index"),
+        display: (rule, colHeaders) => {
+            return `Add column for value of sample sheet index ${rule.value}.`;
+        },
+        init: (component, rule) => {
+            if (!rule) {
+                component.addColumnSampleSheetIndexValue = null;
+            } else {
+                component.addColumnSampleSheetIndexValue = rule.value;
+            }
+        },
+        save: (component, rule) => {
+            rule.value = component.addColumnSampleSheetIndexValue;
+        },
+        apply: (rule, data, sources, columns) => {
+            const ruleValue = rule.value;
+            const newRow = (row, index) => {
+                const newRow = row.slice();
+                const columns = sources[index]["columns"];
+                const value = columns[ruleValue];
+                newRow.push(value);
+                return newRow;
+            };
+            data = data.map(newRow);
+            columns.push(NEW_COLUMN);
+            return { data, columns };
+        },
+    },
     add_column_group_tag_value: {
         title: _l("Add Column from Group Tag Value"),
         display: (rule, colHeaders) => {
diff --git a/client/src/components/RuleCollectionBuilder.vue b/client/src/components/RuleCollectionBuilder.vue
index 711d0158f9e..af41cc84ded 100644
--- a/client/src/components/RuleCollectionBuilder.vue
+++ b/client/src/components/RuleCollectionBuilder.vue
@@ -90,6 +90,15 @@
                                 </select>
                             </label>
                         </RuleComponent>
+                        <RuleComponent
+                            rule-type="add_column_from_sample_sheet_index"
+                            :display-rule-type.sync="displayRuleType"
+                            @saveRule="handleRuleSave">
+                            <label>
+                                {{ l("Value") }}
+                                <input v-model="addColumnSampleSheetIndexValue" type="number" min="0" />
+                            </label>
+                        </RuleComponent>
                         <RuleComponent
                             rule-type="add_column_group_tag_value"
                             :display-rule-type.sync="displayRuleType"
@@ -450,6 +459,10 @@
                                             v-if="metadataOptions"
                                             rule-type="add_column_metadata"
                                             @addNewRule="addNewRule" />
+                                        <RuleTargetComponent
+                                            v-if="sampleSheetMetadataAvailable"
+                                            rule-type="add_column_from_sample_sheet_index"
+                                            @addNewRule="addNewRule" />
                                         <RuleTargetComponent
                                             v-if="hasTagsMetadata"
                                             rule-type="add_column_group_tag_value"
@@ -834,6 +847,7 @@ export default {
             addColumnRegexAllowUnmatched: false,
             addColumnRegexType: "global",
             addColumnMetadataValue: 0,
+            addColumnSampleSheetIndexValue: 0,
             addColumnGroupTagValueValue: "",
             addColumnGroupTagValueDefault: "",
             addColumnConcatenateTarget0: 0,
@@ -1025,6 +1039,19 @@ export default {
             }
             return asDict;
         },
+        sampleSheetMetadataAvailable() {
+            if (this.elementsType !== "collection_contents") {
+                return false;
+            }
+            if (this.initialElements !== null) {
+                const collectionType = this.initialElements.collection_type;
+                const collectionTypeRanks = collectionType.split(":");
+                return collectionTypeRanks[0] == "sample_sheet";
+            } else {
+                // input type unknown right? just have to allow it
+                return true;
+            }
+        },
         metadataOptions() {
             let metadataOptions = {};
             if (this.elementsType == "collection_contents") {
@@ -1033,7 +1060,11 @@ export default {
                 let flatishList = false;
                 if (this.initialElements) {
                     collectionType = this.initialElements.collection_type;
-                    if (collectionType == "list:paired" || collectionType == "list") {
+                    if (
+                        collectionType == "list:paired" ||
+                        collectionType == "list" ||
+                        collectionType.startsWith("sample_sheet")
+                    ) {
                         flatishList = true;
                     }
                 } else {
@@ -1043,7 +1074,7 @@ export default {
                 const collectionTypeRanks = collectionType.split(":");
                 for (const index in collectionTypeRanks) {
                     const collectionTypeRank = collectionTypeRanks[index];
-                    if (collectionTypeRank == "list") {
+                    if (collectionTypeRank == "list" || collectionTypeRank == "sample_sheet") {
                         if (flatishList) {
                             metadataOptions["identifier" + index] = _l("List Identifier");
                             metadataOptions["index" + index] = _l("List Index");
@@ -1787,7 +1818,13 @@ export default {
 
             return datasets;
         },
-        populateElementsFromCollectionDescription(elements, collectionType, parentIdentifiers_, parentIndices_) {
+        populateElementsFromCollectionDescription(
+            elements,
+            collectionType,
+            parentIdentifiers_,
+            parentIndices_,
+            parentColumns_
+        ) {
             const parentIdentifiers = parentIdentifiers_ ? parentIdentifiers_ : [];
             const parentIndices = parentIndices_ ? parentIndices_ : [];
             let data = [];
@@ -1798,6 +1835,10 @@ export default {
                 const identifiers = parentIdentifiers.concat([element.element_identifier]);
                 const indices = parentIndices.concat([index]);
                 const collectionTypeLevelSepIndex = collectionType.indexOf(":");
+                let columns = parentColumns_;
+                if (!columns && collectionType.startsWith("sample_sheet")) {
+                    columns = element.columns ? element.columns : [];
+                }
                 if (collectionTypeLevelSepIndex === -1) {
                     // Flat collection at this depth.
                     // sources are the elements
@@ -1807,6 +1848,7 @@ export default {
                         indices: indices,
                         dataset: elementObject,
                         tags: elementObject.tags,
+                        columns: columns,
                     };
                     sources.push(source);
                 } else {
@@ -1815,7 +1857,8 @@ export default {
                         elementObject.elements,
                         restCollectionType,
                         identifiers,
-                        indices
+                        indices,
+                        columns
                     );
                     const elementData = elementObj.data;
                     const elementSources = elementObj.sources;
diff --git a/client/src/components/Upload/DefaultBox.vue b/client/src/components/Upload/DefaultBox.vue
index eddc06c9486..575627dcd6e 100644
--- a/client/src/components/Upload/DefaultBox.vue
+++ b/client/src/components/Upload/DefaultBox.vue
@@ -554,6 +554,7 @@ defineExpose({
             v-if="isCollection && historyId"
             :history-id="historyId"
             :collection-type="collectionType"
+            :extended-collection-type="{}"
             :selected-items="selectedItemsForModal"
             :show.sync="collectionModalShow"
             default-hide-source-items />
diff --git a/client/src/components/Workflow/Editor/Forms/FormCollectionType.vue b/client/src/components/Workflow/Editor/Forms/FormCollectionType.vue
index 4e4ec891892..686e4964c1a 100644
--- a/client/src/components/Workflow/Editor/Forms/FormCollectionType.vue
+++ b/client/src/components/Workflow/Editor/Forms/FormCollectionType.vue
@@ -32,6 +32,10 @@ const collectionTypeOptions = [
     { value: "list:record", label: "List of Records" },
     { value: "list:paired", label: "List of Dataset Pairs" },
     { value: "list:paired_or_unpaired", label: "Mixed List of Paired and Unpaired Datasets" },
+    { value: "sample_sheet", label: "Sample Sheet of Datasets" },
+    { value: "sample_sheet:paired", label: "Sample Sheet of Dataset Pairs" },
+    { value: "sample_sheet:paired_or_unpaired", label: "Sample Sheet of Paired and Unpaired Datasets" },
+    { value: "sample_sheet:record", label: "Sample Sheet of Dataset Records" },
 ];
 
 function updateValue(newValue: string | undefined) {
diff --git a/client/src/components/Workflow/Editor/Forms/FormColumnDefinition.vue b/client/src/components/Workflow/Editor/Forms/FormColumnDefinition.vue
new file mode 100644
index 00000000000..6049c355158
--- /dev/null
+++ b/client/src/components/Workflow/Editor/Forms/FormColumnDefinition.vue
@@ -0,0 +1,269 @@
+<script setup lang="ts">
+import { BFormCheckbox } from "bootstrap-vue";
+import { computed, ref, watch } from "vue";
+
+import type { SampleSheetColumnDefinition, SampleSheetColumnDefinitionType } from "@/api";
+import { columnTitleToTargetType } from "@/components/Collections/wizard/fetchWorkbooks";
+
+import FormColumnDefinitionType from "./FormColumnDefinitionType.vue";
+import FormElement from "@/components/Form/FormElement.vue";
+
+interface Props {
+    value: SampleSheetColumnDefinition;
+    index: number;
+    prefix: string; // prefix for ID objects
+}
+
+const props = defineProps<Props>();
+
+const emit = defineEmits(["onChange"]);
+
+function stateCopy(): SampleSheetColumnDefinition {
+    return JSON.parse(JSON.stringify(props.value));
+}
+
+const nameError = ref<string | undefined>(undefined);
+
+function onName(name: string) {
+    const state = stateCopy();
+    state.name = name;
+    const mappedToGalaxyColumn = columnTitleToTargetType(name);
+    if (mappedToGalaxyColumn) {
+        nameError.value =
+            "This looks too much a column Galaxy uses automatically for all data imports, please choose a different name.";
+    } else if (!/^[\w\-_ ?]*$/.test(name)) {
+        nameError.value = "Column names can only contain alphanumeric characters, underscores, dashes, and spaces.";
+    } else if (name.length < 1 || name.length > 100) {
+        nameError.value = "Column names must be between 1 and 100 characters long.";
+    } else {
+        nameError.value = undefined;
+    }
+    emit("onChange", state, props.index);
+}
+
+function onDescription(description: string) {
+    const state = stateCopy();
+    state.description = description;
+    emit("onChange", state, props.index);
+}
+
+function onType(newType: SampleSheetColumnDefinitionType) {
+    const state = stateCopy();
+
+    state.type = newType;
+    state.default_value = _defaultByType(newType);
+    emit("onChange", state, props.index);
+}
+
+function onRestrictions(restrictionsAsText: string) {
+    const state = stateCopy();
+    state.suggestions = null;
+    state.restrictions = parseCommaSeparatedValues(restrictionsAsText);
+    emit("onChange", state, props.index);
+}
+
+function onSuggestions(restrictionsAsText: string) {
+    const state = stateCopy();
+    state.restrictions = null;
+    state.suggestions = parseCommaSeparatedValues(restrictionsAsText);
+    emit("onChange", state, props.index);
+}
+
+type EnumerateType = "staticRestrictions" | "staticSuggestions" | "none";
+
+const initialEnumerateType = computed<EnumerateType>(() => {
+    if (props.value.restrictions) {
+        return "staticRestrictions";
+    } else if (props.value.suggestions) {
+        return "staticSuggestions";
+    } else {
+        return "none";
+    }
+});
+
+// Modeled after language and values from workflow/modules.py for step parameters.
+const enumerateTypes = [
+    {
+        value: "none",
+        label: "Do not specify restrictions (default).",
+    },
+    {
+        value: "staticRestrictions",
+        label: "Provide list of all possible values.",
+    },
+    {
+        value: "staticSuggestions",
+        label: "Provide list of suggested values.",
+    },
+];
+const enumerateType = ref<EnumerateType>(initialEnumerateType.value);
+
+function onEnumerateType(newEnumerateType: EnumerateType) {
+    enumerateType.value = newEnumerateType;
+}
+
+function parseCommaSeparatedValues(input: string): string[] {
+    return input
+        .split(",")
+        .map((item) => item.trim())
+        .filter((item) => item !== "");
+}
+
+function asString(value: (string | number | boolean | null)[] | null | undefined): string {
+    if (value) {
+        return value.map((item) => (item ?? "").toString()).join(",");
+    } else {
+        return "";
+    }
+}
+
+const restrictionsAsString = computed(() => {
+    return asString(props.value.restrictions);
+});
+
+const suggestionsAsString = computed(() => {
+    return asString(props.value.suggestions);
+});
+
+function _defaultByType(valueType_: string | undefined = undefined) {
+    const valueType = valueType_ || props.value.type;
+    if (valueType == "string") {
+        return defaultString.value;
+    } else if (valueType == "int") {
+        return parseInt(defaultIntAsStr.value);
+    } else if (valueType == "float") {
+        return parseFloat(defaultFloatAsStr.value);
+    } else if (valueType == "boolean") {
+        if (defaultBoolean.value === "null") {
+            return null; // no default value
+        } else if (defaultBoolean.value === "true") {
+            return true;
+        } else if (defaultBoolean.value === "false") {
+            return false;
+        }
+    } else if (valueType == "element_identifier") {
+        // doesn't make sense to let workflow author to set a default here.
+        return null;
+    } else {
+        return null;
+    }
+}
+
+function setIsOptional(isOptional: boolean) {
+    const state = stateCopy();
+    state.optional = isOptional;
+    emit("onChange", state, props.index);
+}
+
+function setDefaultByType() {
+    const state = stateCopy();
+    state.default_value = _defaultByType();
+    emit("onChange", state, props.index);
+}
+
+const booleanOptions = computed(() => {
+    const options = [
+        { value: "true", label: "True" },
+        { value: "false", label: "False" },
+    ];
+    if (stateCopy().optional) {
+        options.unshift({ value: "null", label: "No default value" });
+    }
+    return options;
+});
+
+const isOptional = ref(props.value.optional ?? false);
+const defaultBoolean = ref(props.value.default_value === null ? "null" : props.value.default_value ? "true" : "false");
+const defaultString = ref(props.value.default_value || "");
+// form framework doesn't yield typed values it seems
+const defaultIntAsStr = ref(props.value.default_value ? props.value.default_value.toString() : "0");
+const defaultFloatAsStr = ref(props.value.default_value ? props.value.default_value.toString() : "0.0");
+
+watch(isOptional, setIsOptional);
+watch(defaultIntAsStr, setDefaultByType);
+watch(defaultFloatAsStr, setDefaultByType);
+watch(defaultBoolean, setDefaultByType);
+watch(defaultString, setDefaultByType);
+</script>
+
+<template>
+    <div>
+        <FormElement
+            :id="prefix + '_name'"
+            :value="value.name"
+            title="Name"
+            type="text"
+            :error="nameError"
+            help="Provide a short, unique name to describe this column."
+            @input="onName" />
+        <FormColumnDefinitionType :value="value.type" :prefix="prefix" @onChange="onType" />
+        <FormElement
+            :id="prefix + '_description'"
+            :value="value.description"
+            :attributes="{ area: true }"
+            title="Description"
+            type="text"
+            help="Provide a longer description to help people running this workflow under what is expected to be entered in this column."
+            @input="onDescription" />
+        <FormElement
+            v-if="value.type == 'string'"
+            :id="prefix + '_enumerate_type'"
+            :value="enumerateType"
+            :attributes="{ data: enumerateTypes }"
+            title="Restrict or Suggest Text Values?"
+            :optional="false"
+            type="select"
+            @input="onEnumerateType" />
+        <FormElement
+            v-if="value.type == 'string' && enumerateType == 'staticRestrictions'"
+            :id="prefix + '_restrictions'"
+            :value="restrictionsAsString"
+            title="Restricted Values"
+            type="text"
+            help="Comma-separated list of all permitted values"
+            @input="onRestrictions" />
+        <FormElement
+            v-if="value.type == 'string' && enumerateType == 'staticSuggestions'"
+            :id="prefix + '_suggestions'"
+            :value="suggestionsAsString"
+            title="Suggested Values"
+            type="text"
+            help="Comma-separated list of all suggested values"
+            @input="onSuggestions" />
+        <BFormCheckbox :id="prefix + '_optional'" v-model="isOptional"> Is this input optional? </BFormCheckbox>
+        <div class="ui-form-title">
+            <span class="ui-form-title-text"> Default Value </span>
+        </div>
+        <FormElement
+            v-if="value.type == 'int'"
+            :id="prefix + '_default_value'"
+            v-model="defaultIntAsStr"
+            type="integer" />
+        <FormElement
+            v-if="value.type == 'float'"
+            :id="prefix + '_default_value'"
+            v-model="defaultFloatAsStr"
+            type="float" />
+        <FormElement
+            v-if="value.type == 'string'"
+            :id="prefix + '_default_value'"
+            v-model="defaultString"
+            type="text" />
+        <FormElement
+            v-if="value.type == 'boolean'"
+            :id="prefix + '_default_value'"
+            v-model="defaultBoolean"
+            :attributes="{ data: booleanOptions }"
+            type="select" />
+
+        <!--
+        TODO: There are more fields to enter here including validations that vary based on the type chosen. There will
+        be a lot of overlap with the same validation options for workflow parameters so it might be best to wait until
+        those components can be developed in parallel.
+        -->
+    </div>
+</template>
+
+<style lang="scss" scoped>
+@import "@/components/Form/_form-elements.scss";
+</style>
diff --git a/client/src/components/Workflow/Editor/Forms/FormColumnDefinitionType.vue b/client/src/components/Workflow/Editor/Forms/FormColumnDefinitionType.vue
new file mode 100644
index 00000000000..f17a2afa7ee
--- /dev/null
+++ b/client/src/components/Workflow/Editor/Forms/FormColumnDefinitionType.vue
@@ -0,0 +1,53 @@
+<script setup lang="ts">
+import { ref, watch } from "vue";
+
+import type { SampleSheetColumnDefinitionType } from "@/api";
+
+import FormElement from "@/components/Form/FormElement.vue";
+
+interface Props {
+    value: SampleSheetColumnDefinitionType;
+    prefix: string;
+}
+
+const props = defineProps<Props>();
+
+const currentValue = ref<SampleSheetColumnDefinitionType>(props.value);
+
+function onInput(newType: SampleSheetColumnDefinitionType) {
+    emit("onChange", newType);
+}
+
+function updateValue(newValue: SampleSheetColumnDefinitionType) {
+    currentValue.value = newValue;
+}
+
+// workflow/modules.py uses:
+// {"value": "text", "label": "Text"},
+// {"value": "integer", "label": "Integer"},
+// {"value": "float", "label": "Float"},
+// {"value": "boolean", "label": "Boolean (True or False)"},
+const columnTypes = [
+    { value: "string", label: "Text" },
+    { value: "int", label: "Integer" },
+    { value: "float", label: "Float" },
+    { value: "boolean", label: "Boolean (True or False)" },
+    { value: "element_identifier", label: "Element Identifier" },
+];
+
+watch(() => props.value, updateValue, { immediate: true });
+const emit = defineEmits(["onChange"]);
+</script>
+
+<template>
+    <div>
+        <FormElement
+            :id="prefix + '_type'"
+            :value="currentValue"
+            :attributes="{ data: columnTypes }"
+            title="Column type"
+            :optional="false"
+            type="select"
+            @input="onInput" />
+    </div>
+</template>
diff --git a/client/src/components/Workflow/Editor/Forms/FormColumnDefinitions.vue b/client/src/components/Workflow/Editor/Forms/FormColumnDefinitions.vue
new file mode 100644
index 00000000000..6a9ec9cbae1
--- /dev/null
+++ b/client/src/components/Workflow/Editor/Forms/FormColumnDefinitions.vue
@@ -0,0 +1,161 @@
+<script setup lang="ts">
+import { library } from "@fortawesome/fontawesome-svg-core";
+import { faCaretDown, faCaretUp, faPlus, faTrashAlt } from "@fortawesome/free-solid-svg-icons";
+import { FontAwesomeIcon } from "@fortawesome/vue-fontawesome";
+import { BLink } from "bootstrap-vue";
+import { computed } from "vue";
+
+import type { SampleSheetColumnDefinition, SampleSheetColumnDefinitions } from "@/api";
+import type { SampleSheetCollectionType } from "@/api/datasetCollections";
+import { downloadWorkbook } from "@/components/Collections/sheet/workbooks";
+import localize from "@/utils/localization";
+
+import FormColumnDefinition from "./FormColumnDefinition.vue";
+import DownloadWorkbookButton from "@/components/Collections/sheet/DownloadWorkbookButton.vue";
+import FormCard from "@/components/Form/FormCard.vue";
+
+library.add(faPlus, faTrashAlt, faCaretUp, faCaretDown);
+
+interface Props {
+    value: SampleSheetColumnDefinitions;
+    collectionType: SampleSheetCollectionType;
+}
+
+const props = defineProps<Props>();
+
+function addColumn() {
+    const state = stateCopy();
+    state.push({ type: "string", name: "column", optional: false, description: "" });
+    emit("onChange", state);
+}
+
+function stateCopy(): SampleSheetColumnDefinition[] {
+    return JSON.parse(JSON.stringify(props.value || []));
+}
+
+function onRemove(index: number) {
+    const state = stateCopy();
+    state.splice(index, 1);
+    emit("onChange", state);
+}
+
+function titleForColumnDefinition(index: number) {
+    return `Column ${index + 1}`;
+}
+
+function getPrefix(index: number) {
+    const name = `column_definition_${index}`;
+    return name;
+}
+
+function getButtonId(index: number, direction: "up" | "down") {
+    const prefix = getPrefix(index);
+    return `${prefix}_${direction}`;
+}
+
+function swap(index: number, swapWith: number, direction: "up" | "down") {
+    // the FormRepeat version does cool highlighting - probably worth implementing
+    // on next pass
+    const state = stateCopy();
+    if (swapWith >= 0 && swapWith < state.length && index >= 0 && index < state.length) {
+        const wasSwapped = state[swapWith] as SampleSheetColumnDefinition;
+        state[swapWith] = state[index] as SampleSheetColumnDefinition;
+        state[index] = wasSwapped;
+    }
+    emit("onChange", state);
+}
+
+function onChildUpdate(childState: SampleSheetColumnDefinition, index: number) {
+    const state = stateCopy();
+    state[index] = childState;
+    emit("onChange", state);
+}
+
+const deleteTooltip = computed(() => {
+    return localize(`Click to delete column definition`);
+});
+
+const saveTooltip = computed(() => {
+    return localize(`Click to download an example workbook (xlsx file) for these columns`);
+});
+
+const emit = defineEmits(["onChange"]);
+</script>
+
+<template>
+    <div class="ui-form-element section-row" data-description="edit column definitions">
+        <div class="ui-form-title">
+            <span class="ui-form-title-text">Column definitions</span>
+            <span v-b-tooltip.hover.bottom :title="saveTooltip">
+                <DownloadWorkbookButton
+                    title="download example workbook"
+                    @click="downloadWorkbook(value, props.collectionType)" />
+            </span>
+        </div>
+        <FormCard
+            v-for="(columnDefinition, index) in value"
+            v-bind:key="index"
+            data-description="column definition block"
+            class="card"
+            :title="titleForColumnDefinition(index)">
+            <template v-slot:operations>
+                <!-- code modelled after FormRepeat -->
+                <span class="float-right">
+                    <b-button-group>
+                        <b-button
+                            :id="getButtonId(index, 'up')"
+                            v-b-tooltip.hover.bottom
+                            title="move up"
+                            role="button"
+                            variant="link"
+                            size="sm"
+                            class="ml-0"
+                            @click="() => swap(index, index - 1, 'up')">
+                            <FontAwesomeIcon icon="caret-up" />
+                        </b-button>
+                        <b-button
+                            :id="getButtonId(index, 'down')"
+                            v-b-tooltip.hover.bottom
+                            title="move down"
+                            role="button"
+                            variant="link"
+                            size="sm"
+                            class="ml-0"
+                            @click="() => swap(index, index + 1, 'down')">
+                            <FontAwesomeIcon icon="caret-down" />
+                        </b-button>
+                    </b-button-group>
+
+                    <span v-b-tooltip.hover.bottom :title="deleteTooltip">
+                        <b-button
+                            title="delete"
+                            role="button"
+                            variant="link"
+                            size="sm"
+                            class="ml-0"
+                            @click="() => onRemove(index)">
+                            <FontAwesomeIcon icon="trash-alt" />
+                        </b-button>
+                    </span>
+                </span>
+            </template>
+            <template v-slot:body>
+                <FormColumnDefinition
+                    :index="index"
+                    :value="columnDefinition"
+                    :prefix="getPrefix(index)"
+                    @onChange="onChildUpdate" />
+            </template>
+        </FormCard>
+        <BLink data-description="edit column definitions add" @click="addColumn">Add column.</BLink>
+    </div>
+</template>
+
+<style lang="scss" scoped>
+@import "../../../Form/_form-elements.scss";
+
+.column-definition-list {
+    padding: 0px;
+    list-style-type: none;
+}
+</style>
diff --git a/client/src/components/Workflow/Editor/Forms/FormInputCollection.vue b/client/src/components/Workflow/Editor/Forms/FormInputCollection.vue
index 318ac55fca3..d6fc8df0382 100644
--- a/client/src/components/Workflow/Editor/Forms/FormInputCollection.vue
+++ b/client/src/components/Workflow/Editor/Forms/FormInputCollection.vue
@@ -1,7 +1,8 @@
 <script setup lang="ts">
 import { computed, toRef } from "vue";
 
-import type { FieldDict } from "@/api";
+import type { FieldDict, SampleSheetColumnDefinitions } from "@/api";
+import type { SampleSheetCollectionType } from "@/api/datasetCollections";
 import type { DatatypesMapperModel } from "@/components/Datatypes/model";
 import type { Step } from "@/stores/workflowStepStore";
 
@@ -9,6 +10,7 @@ import { useToolState } from "../composables/useToolState";
 
 import FormElement from "@/components/Form/FormElement.vue";
 import FormCollectionType from "@/components/Workflow/Editor/Forms/FormCollectionType.vue";
+import FormColumnDefinitions from "@/components/Workflow/Editor/Forms/FormColumnDefinitions.vue";
 import FormDatatype from "@/components/Workflow/Editor/Forms/FormDatatype.vue";
 import FormRecordFieldDefinitions from "@/components/Workflow/Editor/Forms/FormRecordFieldDefinitions.vue";
 
@@ -18,6 +20,7 @@ interface ToolState {
     format: string | null;
     tag: string | null;
     fields: FieldDict[] | null;
+    column_definitions: SampleSheetColumnDefinitions;
 }
 
 const props = defineProps<{
@@ -42,6 +45,7 @@ function cleanToolState(): ToolState {
             tag: null,
             format: null,
             fields: null,
+            column_definitions: null,
         };
     }
 }
@@ -80,9 +84,16 @@ function onRecordFieldDefinitions(newRecordFieldDefinitions: FieldDict[]) {
 
 const isRecordType = computed(() => {
     const collectionType = asToolState(toolState.value).collection_type;
-    return collectionType == "record" || collectionType == "list:record";
+    return collectionType == "record" || collectionType == "list:record" || collectionType == "sample_sheet:record";
 });
 
+function onColumnDefinitions(newColumnDefinitions: SampleSheetColumnDefinitions) {
+    const state = cleanToolState();
+    console.log(newColumnDefinitions);
+    state.column_definitions = newColumnDefinitions;
+    emit("onChange", state);
+}
+
 const formatsAsList = computed(() => {
     const formatStr = toolState.value?.format as string | string[] | null;
     if (formatStr && typeof formatStr === "string") {
@@ -98,6 +109,14 @@ const collectionType = computed(() => {
     return toolState.value.collection_type as string | undefined;
 });
 
+const isSampleSheetType = computed(() => {
+    return collectionType.value?.startsWith("sample_sheet");
+});
+
+const sampleSheetCollectionType = computed(() => {
+    return toolState.value.collection_type as SampleSheetCollectionType;
+});
+
 // Terrible Hack: The parent component (./FormDefault.vue) ignores the first update, so
 // I am sending a dummy update here. Ideally, the parent FormDefault would not expect this.
 emit("onChange", cleanToolState());
@@ -123,6 +142,11 @@ emit("onChange", cleanToolState());
             type="text"
             help="Tags to automatically filter inputs"
             @input="onTags" />
+        <FormColumnDefinitions
+            v-if="isSampleSheetType"
+            :collection-type="sampleSheetCollectionType"
+            :value="asToolState(toolState).column_definitions"
+            @onChange="onColumnDefinitions" />
         <FormRecordFieldDefinitions
             v-if="isRecordType"
             :value="asToolState(toolState).fields || []"
diff --git a/client/src/components/Workflow/Editor/modules/collectionTypeDescription.ts b/client/src/components/Workflow/Editor/modules/collectionTypeDescription.ts
index 5b80fe20a27..312525b01a7 100644
--- a/client/src/components/Workflow/Editor/modules/collectionTypeDescription.ts
+++ b/client/src/components/Workflow/Editor/modules/collectionTypeDescription.ts
@@ -209,7 +209,8 @@ export class CollectionTypeDescription implements CollectionTypeDescriptor {
     }
 }
 
-const collectionTypeRegex = /^(list|paired|record)(:(list|paired|record))*$/;
+const collectionTypeRegex =
+    /^((list|paired|paired_or_unpaired|record)(:(list|paired|paired_or_unpaired|record))*|sample_sheet|sample_sheet:paired|sample_sheet:record|sample_sheet:paired_or_unpaired)$/;
 
 export function isValidCollectionTypeStr(collectionType: string | undefined) {
     if (collectionType) {
diff --git a/client/src/stores/workflowStepStore.ts b/client/src/stores/workflowStepStore.ts
index 644d76d95fe..f1712289301 100644
--- a/client/src/stores/workflowStepStore.ts
+++ b/client/src/stores/workflowStepStore.ts
@@ -1,6 +1,6 @@
 import { computed, del, ref, set } from "vue";
 
-import type { FieldDict } from "@/api";
+import type { FieldDict, SampleSheetColumnDefinitions } from "@/api";
 import type { CollectionTypeDescriptor } from "@/components/Workflow/Editor/modules/collectionTypeDescription";
 import { getConnectionId, useConnectionStore } from "@/stores/workflowConnectionStore";
 import { assertDefined } from "@/utils/assertions";
@@ -76,6 +76,7 @@ export interface DataCollectionStepInput extends BaseStepInput {
     input_type: "dataset_collection";
     collection_types: string[];
     fields: FieldDict[];
+    column_definitions: SampleSheetColumnDefinitions;
 }
 
 export interface ParameterStepInput extends Omit<BaseStepInput, "input_type"> {
diff --git a/client/src/utils/navigation/navigation.yml b/client/src/utils/navigation/navigation.yml
index 449b14c9e87..51db7cec56d 100644
--- a/client/src/utils/navigation/navigation.yml
+++ b/client/src/utils/navigation/navigation.yml
@@ -736,6 +736,28 @@ workflow_run:
         element_by_hid: "${_} [data-description='list dataset collection element'][data-hid='${hid}'] [data-description='dataset hid']"
         <<: *upload_mixin
 
+    sample_sheet:
+      selectors:
+        _: '.sample-sheet-collection-creator'
+        data_import_source_from: '[data-import-source-from="${source}"]'
+        paste_table_textarea: '.paste-data textarea'
+        wizard_next_button: '.wizard-actions .go-next-btn'
+        grid_cell: '[row-index="${row_index}"] .ag-cell-value[col-id="${column_name}"]'
+        grid_cell_input: '[row-index="${row_index}"] .ag-cell-value[col-id="${column_name}"] input'
+        collection_created_message: '[data-description="collection created"]'
+        select_picker: '.ag-picker-field-icon'
+        select_popup:
+          type: xpath
+          selector: '//div[contains(@class, "ag-popup-child")]'
+        select_listitem:
+          type: xpath
+          selector: '//div[contains(@class, "ag-popup-child")]//div[contains(@class, "ag-list-item")]'
+        select_item:
+          type: xpath
+          selector: '//div[contains(@class, "ag-popup-child")]//div[contains(@class, "ag-list-item")]//span[contains(text(), "${item}")]'
+        select_collection: '[data-description="selection collection card"]'
+        collection_selection: .selection-dialog-modal [role="row"][data-pk="${id}"]
+
   form_element:
     selectors:
       _: 'div.workflow-run-element[id="form-element-${index}"]'
@@ -877,6 +899,10 @@ workflow_editor:
       type: xpath
       selector: >
         //div[@id='form-element-__annotation']//textarea
+    collection_type_input:
+      type: xpath
+      selector: >
+        //div[@id='form-element-collection_type']//input
     step_when:
       type: xpath
       selector: >
@@ -932,6 +958,13 @@ workflow_editor:
     modal_button_continue: '.modal-footer .btn'
     workflow_activity: '#activity-workflow-editor-workflows'
     save_as_activity: "#activity-save-workflow-as"
+    column_definitions: '[data-description="edit column definitions"]'
+    add_column_definition: '[data-description="edit column definitions add"]'
+    column_definition_name_by_index: '#form-element-column_definition_${index}_name input'
+    column_definition_description_by_index: '#form-element-column_definition_${index}_description textarea'
+    column_definition_type_by_index: '#form-element-column_definition_${index}_type .multiselect'
+    column_definition_optional_by_index: 'input#column_definition_${index}_optional'
+    column_definition_default_value_by_index: '#form-element-column_definition_${index}_default_value input'
 
 workflow_show:
   selectors:
diff --git a/lib/galaxy/config/sample/tool_conf.xml.sample b/lib/galaxy/config/sample/tool_conf.xml.sample
index 8b8c3c4a639..0f255ab02d6 100644
--- a/lib/galaxy/config/sample/tool_conf.xml.sample
+++ b/lib/galaxy/config/sample/tool_conf.xml.sample
@@ -51,6 +51,7 @@
     <tool file="${model_tools_path}/apply_rules.xml" />
     <tool file="${model_tools_path}/build_list.xml" />
     <tool file="${model_tools_path}/build_list_1.2.0.xml" />
+    <tool file="${model_tools_path}/sample_sheet_to_tabular.xml" />
     <tool file="${model_tools_path}/extract_dataset.xml" />
     <tool file="${model_tools_path}/duplicate_file_to_collection.xml" />
   </section>
diff --git a/lib/galaxy/job_execution/output_collect.py b/lib/galaxy/job_execution/output_collect.py
index d09f767d38a..d6920dfde11 100644
--- a/lib/galaxy/job_execution/output_collect.py
+++ b/lib/galaxy/job_execution/output_collect.py
@@ -146,6 +146,8 @@ def collect_dynamic_outputs(
                 collection_type_description = COLLECTION_TYPE_DESCRIPTION_FACTORY.for_collection_type(collection_type)
                 structure = UninitializedTree(collection_type_description)
                 hdca = job_context.create_hdca(name, structure)
+                if "column_definitions" in unnamed_output_dict:
+                    hdca.collection.column_definitions = unnamed_output_dict["column_definitions"]
                 output_collections[name] = hdca
                 job_context.add_dataset_collection(hdca)
             error_message = unnamed_output_dict.get("error_message")
diff --git a/lib/galaxy/managers/collections.py b/lib/galaxy/managers/collections.py
index e917ce69b0e..8fbb097c315 100644
--- a/lib/galaxy/managers/collections.py
+++ b/lib/galaxy/managers/collections.py
@@ -190,6 +190,8 @@ class DatasetCollectionManager:
         completed_job=None,
         output_name=None,
         fields: Optional[Union[str, List["FieldDict"]]] = None,
+        column_definitions=None,
+        rows=None,
     ) -> "DatasetCollectionInstance":
         """
         PRECONDITION: security checks on ability to add to parent
@@ -215,6 +217,8 @@ class DatasetCollectionManager:
                 copy_elements=copy_elements,
                 history=history,
                 fields=fields,
+                column_definitions=column_definitions,
+                rows=rows,
             )
 
         implicit_inputs = []
@@ -306,6 +310,8 @@ class DatasetCollectionManager:
         copy_elements: bool = False,
         history=None,
         fields: Optional[Union[str, List["FieldDict"]]] = None,
+        column_definitions=None,
+        rows=None,
     ) -> DatasetCollection:
         # Make sure at least one of these is None.
         assert element_identifiers is None or elements is None
@@ -342,9 +348,12 @@ class DatasetCollectionManager:
 
         if elements is not self.ELEMENTS_UNINITIALIZED:
             type_plugin = collection_type_description.rank_type_plugin()
-            dataset_collection = builder.build_collection(type_plugin, elements, fields=fields)
+            dataset_collection = builder.build_collection(
+                type_plugin, elements, fields=fields, column_definitions=column_definitions, rows=rows
+            )
         else:
             # TODO: Pass fields here - need test case first.
+            # TODO: same with column definitions I think.
             dataset_collection = DatasetCollection(populated=False)
         dataset_collection.collection_type = collection_type
         return dataset_collection
@@ -813,7 +822,9 @@ class DatasetCollectionManager:
 
         return elements
 
-    def __init_rule_data(self, elements, collection_type_description, parent_identifiers=None, parent_indices=None):
+    def __init_rule_data(
+        self, elements, collection_type_description, parent_identifiers=None, parent_indices=None, parent_columns=None
+    ):
         parent_identifiers = parent_identifiers or []
         parent_indices = parent_indices or []
         data: List[List[str]] = []
@@ -821,6 +832,11 @@ class DatasetCollectionManager:
         for i, element in enumerate(elements):
             indices = parent_indices.copy()
             indices.append(i)
+            columns = parent_columns
+            collection_type_str = collection_type_description.collection_type
+            if columns is None and collection_type_str.startswith("sample_sheet"):
+                columns = element.columns
+                assert isinstance(columns, list)
 
             element_object = element.element_object
             identifiers = parent_identifiers + [element.element_identifier]
@@ -831,6 +847,7 @@ class DatasetCollectionManager:
                     "dataset": element_object,
                     "tags": element_object.make_tag_string_list(),
                     "indices": indices,
+                    "columns": columns,
                 }
                 sources.append(source)
             else:
@@ -840,6 +857,7 @@ class DatasetCollectionManager:
                     child_collection_type_description,
                     identifiers,
                     parent_indices=indices,
+                    parent_columns=columns,
                 )
                 data.extend(element_data)
                 sources.extend(element_sources)
diff --git a/lib/galaxy/managers/collections_util.py b/lib/galaxy/managers/collections_util.py
index 7f129992c75..8fbef8ed3a2 100644
--- a/lib/galaxy/managers/collections_util.py
+++ b/lib/galaxy/managers/collections_util.py
@@ -9,6 +9,7 @@ from galaxy import (
     exceptions,
     model,
 )
+from galaxy.model.dataset_collections.types.sample_sheet_util import validate_column_definitions
 from galaxy.util import string_as_bool
 
 log = logging.getLogger(__name__)
@@ -33,6 +34,9 @@ def api_payload_to_create_params(payload):
         message = f"Missing required parameters {missing_parameters}"
         raise exceptions.ObjectAttributeMissingException(message)
 
+    column_definitions = payload.get("column_definitions", None)
+    validate_column_definitions(column_definitions)
+
     params = dict(
         collection_type=payload.get("collection_type"),
         element_identifiers=payload.get("element_identifiers"),
@@ -40,6 +44,8 @@ def api_payload_to_create_params(payload):
         hide_source_items=string_as_bool(payload.get("hide_source_items", False)),
         copy_elements=string_as_bool(payload.get("copy_elements", False)),
         fields=payload.get("fields", None),
+        column_definitions=column_definitions,
+        rows=payload.get("rows", None),
     )
     return params
 
diff --git a/lib/galaxy/model/__init__.py b/lib/galaxy/model/__init__.py
index a4bdf8e41d8..64926624f32 100644
--- a/lib/galaxy/model/__init__.py
+++ b/lib/galaxy/model/__init__.py
@@ -185,6 +185,8 @@ from galaxy.schema.schema import (
     DatasetValidatedState,
     InvocationsStateCounts,
     JobState,
+    SampleSheetColumnDefinitions,
+    SampleSheetRow,
     ToolRequestState,
 )
 from galaxy.schema.workflow.comments import WorkflowCommentModel
@@ -277,6 +279,7 @@ CONFIGURATION_TEMPLATE_CONFIGURATION_VALUE_TYPE = Union[str, bool, int]
 CONFIGURATION_TEMPLATE_CONFIGURATION_VARIABLES_TYPE = Dict[str, CONFIGURATION_TEMPLATE_CONFIGURATION_VALUE_TYPE]
 CONFIGURATION_TEMPLATE_CONFIGURATION_SECRET_NAMES_TYPE = List[str]
 CONFIGURATION_TEMPLATE_DEFINITION_TYPE = Dict[str, Any]
+DATA_COLLECTION_FIELDS = List[Dict[str, Any]]
 
 
 class TransformAction(TypedDict):
@@ -6678,7 +6681,10 @@ class DatasetCollection(Base, Dictifiable, UsesAnnotations, Serializable):
     element_count: Mapped[Optional[int]]
     create_time: Mapped[datetime] = mapped_column(default=now, nullable=True)
     update_time: Mapped[datetime] = mapped_column(default=now, onupdate=now, nullable=True)
-    fields: Mapped[Optional[bytes]] = mapped_column(JSONType, nullable=True)
+    # if collection_type is 'record' (heterogenous collection)
+    fields: Mapped[Optional[DATA_COLLECTION_FIELDS]] = mapped_column(JSONType)
+    # if collection_type is 'sample_sheet' (collection of rows that datasets with extra column metadata)
+    column_definitions: Mapped[Optional[SampleSheetColumnDefinitions]] = mapped_column(JSONType)
 
     elements: Mapped[List["DatasetCollectionElement"]] = relationship(
         primaryjoin=(lambda: DatasetCollection.id == DatasetCollectionElement.dataset_collection_id),
@@ -6698,14 +6704,15 @@ class DatasetCollection(Base, Dictifiable, UsesAnnotations, Serializable):
         populated=True,
         element_count=None,
         fields=None,
+        column_definitions=None,
     ):
         self.id = id
         self.collection_type = collection_type
         if not populated:
             self.populated_state = DatasetCollection.populated_states.NEW
         self.element_count = element_count
-        # TODO: persist fields...
         self.fields = fields
+        self.column_definitions = column_definitions
 
     def _build_nested_collection_attributes_stmt(
         self,
@@ -7149,6 +7156,7 @@ class DatasetCollectionInstance(HasName, UsesCreateAndUpdateTime):
             name=self.name,
             collection_id=self.collection_id,
             collection_type=self.collection.collection_type,
+            column_definitions=self.collection.column_definitions,
             populated=self.populated,
             populated_state=self.collection.populated_state,
             populated_state_message=self.collection.populated_state_message,
@@ -7632,6 +7640,7 @@ class DatasetCollectionElement(Base, Dictifiable, Serializable):
     # Element index and identifier to define this parent-child relationship.
     element_index: Mapped[Optional[int]]
     element_identifier: Mapped[Optional[str]] = mapped_column(Unicode(255))
+    columns: Mapped[Optional[SampleSheetRow]] = mapped_column(JSONType)
 
     hda: Mapped[Optional["HistoryDatasetAssociation"]] = relationship(
         "HistoryDatasetAssociation",
@@ -7652,7 +7661,7 @@ class DatasetCollectionElement(Base, Dictifiable, Serializable):
 
     # actionable dataset id needs to be available via API...
     dict_collection_visible_keys = ["id", "element_type", "element_index", "element_identifier"]
-    dict_element_visible_keys = ["id", "element_type", "element_index", "element_identifier"]
+    dict_element_visible_keys = ["id", "element_type", "element_index", "element_identifier", "columns"]
 
     UNINITIALIZED_ELEMENT = object()
 
@@ -7663,6 +7672,7 @@ class DatasetCollectionElement(Base, Dictifiable, Serializable):
         element=None,
         element_index=None,
         element_identifier=None,
+        columns: Optional[SampleSheetRow] = None,
     ):
         if isinstance(element, HistoryDatasetAssociation):
             self.hda = element
@@ -7681,6 +7691,7 @@ class DatasetCollectionElement(Base, Dictifiable, Serializable):
                 self.dataset_collection_id = collection.id
         self.element_index = element_index
         self.element_identifier = element_identifier or str(element_index)
+        self.columns = columns
 
     def __strict_check_before_flush__(self):
         if self.collection.populated_optimized:
@@ -7829,6 +7840,7 @@ class DatasetCollectionElement(Base, Dictifiable, Serializable):
             element_type=self.element_type,
             element_index=self.element_index,
             element_identifier=self.element_identifier,
+            columns=self.columns,
         )
         serialization_options.attach_identifier(id_encoder, self, rval)
         element_obj = self.element_object
diff --git a/lib/galaxy/model/dataset_collections/adapters.py b/lib/galaxy/model/dataset_collections/adapters.py
index 0cbf080aa91..aebe8b2fde9 100644
--- a/lib/galaxy/model/dataset_collections/adapters.py
+++ b/lib/galaxy/model/dataset_collections/adapters.py
@@ -269,6 +269,10 @@ class TransientCollectionAdapterDatasetInstanceElement:
     def is_collection(self):
         return False
 
+    @property
+    def columns(self):
+        return None
+
 
 def recover_adapter(wrapped_object, adapter_model):
     adapter_type = adapter_model.adapter_type
diff --git a/lib/galaxy/model/dataset_collections/builder.py b/lib/galaxy/model/dataset_collections/builder.py
index 2518be6c9de..265a2fc5985 100644
--- a/lib/galaxy/model/dataset_collections/builder.py
+++ b/lib/galaxy/model/dataset_collections/builder.py
@@ -4,6 +4,7 @@ from typing import (
     List,
     Optional,
     Set,
+    Tuple,
     TYPE_CHECKING,
     Union,
 )
@@ -23,6 +24,7 @@ if TYPE_CHECKING:
         BaseDatasetCollectionType,
         DatasetInstanceMapping,
     )
+    from galaxy.schema.schema import SampleSheetRow
     from galaxy.tool_util_models.tool_source import FieldDict
 
 
@@ -32,15 +34,19 @@ def build_collection(
     collection: Optional[DatasetCollection] = None,
     associated_identifiers: Optional[Set[str]] = None,
     fields: Optional[Union[str, List["FieldDict"]]] = None,
-) -> DatasetCollection:
+    column_definitions=None,
+    rows: Optional[Dict[str, Optional["SampleSheetRow"]]] = None,
+):
     """
     Build DatasetCollection with populated DatasetcollectionElement objects
     corresponding to the supplied dataset instances or throw exception if
     this is not a valid collection of the specified type.
     """
-    dataset_collection = collection or DatasetCollection(fields=fields)
+    dataset_collection = collection or DatasetCollection(fields=fields, column_definitions=column_definitions)
     associated_identifiers = associated_identifiers or set()
-    set_collection_elements(dataset_collection, type, dataset_instances, associated_identifiers, fields=fields)
+    set_collection_elements(
+        dataset_collection, type, dataset_instances, associated_identifiers, fields=fields, rows=rows
+    )
     return dataset_collection
 
 
@@ -50,6 +56,7 @@ def set_collection_elements(
     dataset_instances: "DatasetInstanceMapping",
     associated_identifiers: Set[str],
     fields: Optional[Union[str, List["FieldDict"]]] = None,
+    rows: Optional[Dict[str, Optional["SampleSheetRow"]]] = None,
 ) -> DatasetCollection:
     new_element_keys = OrderedSet(dataset_instances.keys()) - associated_identifiers
     new_dataset_instances = {k: dataset_instances[k] for k in new_element_keys}
@@ -58,7 +65,10 @@ def set_collection_elements(
     elements = []
     if type.collection_type == "record" and fields == "auto":
         fields = guess_fields(dataset_instances)
-    for element in type.generate_elements(new_dataset_instances, fields=fields):
+    column_definitions = dataset_collection.column_definitions
+    for element in type.generate_elements(
+        new_dataset_instances, fields=fields, rows=rows, column_definitions=column_definitions
+    ):
         element.element_index = element_index
         add_object_to_object_session(element, dataset_collection)
         element.collection = dataset_collection
@@ -89,9 +99,14 @@ ElementsDict = Dict[str, Union["CollectionBuilder", DatasetInstance]]
 class CollectionBuilder:
     """Purely functional builder pattern for building a dataset collection."""
 
-    def __init__(self, collection_type_description: "CollectionTypeDescription"):
+    _current_elements: ElementsDict
+    _current_row_data: Dict[str, Optional["SampleSheetRow"]] = {}
+
+    def __init__(self, collection_type_description):
         self._collection_type_description = collection_type_description
-        self._current_elements: ElementsDict = {}
+        self._current_elements = {}
+        self._current_row_data = {}
+
         # Store collection here so we don't recreate the collection all the time
         self.collection: Optional[DatasetCollection] = None
         self.associated_identifiers: Set[str] = set()
@@ -129,7 +144,7 @@ class CollectionBuilder:
                 )
         return elements
 
-    def get_level(self, identifier: str) -> "CollectionBuilder":
+    def get_level(self, identifier: str, row: Optional["SampleSheetRow"] = None) -> "CollectionBuilder":
         if not self._nested_collection:
             message_template = "Cannot add nested collection to collection of type [%s]"
             message = message_template % (self._collection_type_description)
@@ -140,10 +155,14 @@ class CollectionBuilder:
         else:
             subcollection_builder = CollectionBuilder(self._subcollection_type_description)
             self._current_elements[identifier] = subcollection_builder
+            self._current_row_data[identifier] = row
         return subcollection_builder
 
-    def add_dataset(self, identifier: str, dataset_instance: DatasetInstance) -> None:
+    def add_dataset(
+        self, identifier: str, dataset_instance: DatasetInstance, row: Optional["SampleSheetRow"] = None
+    ) -> None:
         self._current_elements[identifier] = dataset_instance
+        self._current_row_data[identifier] = row
 
     def build_elements(self) -> "DatasetInstanceMapping":
         elements = self._current_elements
@@ -157,11 +176,20 @@ class CollectionBuilder:
             self._current_elements = {}
             return cast(Dict[str, DatasetInstance], elements)
 
+    def build_elements_and_rows(
+        self,
+    ) -> Tuple["DatasetInstanceMapping", Optional[Dict[str, Optional["SampleSheetRow"]]]]:
+        row_data = self._current_row_data
+        self._current_row_data = {}
+        return self.build_elements(), row_data
+
     def build(self) -> DatasetCollection:
         type_plugin = self._collection_type_description.rank_type_plugin()
+        elements, rows = self.build_elements_and_rows()
         self.collection = build_collection(
-            type_plugin, self.build_elements(), self.collection, self.associated_identifiers
+            type_plugin, elements, self.collection, self.associated_identifiers, rows=rows
         )
+        assert self.collection
         self.collection.collection_type = self._collection_type_description.collection_type
         return self.collection
 
@@ -186,9 +214,9 @@ class BoundCollectionBuilder(CollectionBuilder):
         super().__init__(collection_type_description)
 
     def populate_partial(self):
-        elements = self.build_elements()
+        elements, rows = self.build_elements_and_rows()
         type_plugin = self._collection_type_description.rank_type_plugin()
-        set_collection_elements(self.dataset_collection, type_plugin, elements, self.associated_identifiers)
+        set_collection_elements(self.dataset_collection, type_plugin, elements, self.associated_identifiers, rows=rows)
 
     def populate(self):
         self.populate_partial()
diff --git a/lib/galaxy/model/dataset_collections/registry.py b/lib/galaxy/model/dataset_collections/registry.py
index 8c0a52faa01..27dd78f5e9c 100644
--- a/lib/galaxy/model/dataset_collections/registry.py
+++ b/lib/galaxy/model/dataset_collections/registry.py
@@ -10,6 +10,7 @@ from .types import (
     paired,
     paired_or_unpaired,
     record,
+    sample_sheet,
 )
 
 PLUGIN_CLASSES: List[Type[BaseDatasetCollectionType]] = [
@@ -17,6 +18,7 @@ PLUGIN_CLASSES: List[Type[BaseDatasetCollectionType]] = [
     paired.PairedDatasetCollectionType,
     record.RecordDatasetCollectionType,
     paired_or_unpaired.PairedOrUnpairedDatasetCollectionType,
+    sample_sheet.SampleSheetDatasetCollectionType,
 ]
 
 
diff --git a/lib/galaxy/model/dataset_collections/type_description.py b/lib/galaxy/model/dataset_collections/type_description.py
index 9b58cadf6ef..a82c0072b6f 100644
--- a/lib/galaxy/model/dataset_collections/type_description.py
+++ b/lib/galaxy/model/dataset_collections/type_description.py
@@ -14,7 +14,7 @@ if TYPE_CHECKING:
 
 
 COLLECTION_TYPE_REGEX = re.compile(
-    r"^(list|paired|paired_or_unpaired|record)(:(list|paired|paired_or_unpaired|record))*$"
+    r"^((list|paired|paired_or_unpaired|record)(:(list|paired|paired_or_unpaired|record))*|sample_sheet|sample_sheet:paired|sample_sheet:record|sample_sheet:paired_or_unpaired)$"
 )
 
 
diff --git a/lib/galaxy/model/dataset_collections/types/sample_sheet.py b/lib/galaxy/model/dataset_collections/types/sample_sheet.py
new file mode 100644
index 00000000000..3409ce70bda
--- /dev/null
+++ b/lib/galaxy/model/dataset_collections/types/sample_sheet.py
@@ -0,0 +1,36 @@
+from typing import cast
+
+from galaxy.exceptions import RequestParameterMissingException
+from galaxy.model import DatasetCollectionElement
+from . import BaseDatasetCollectionType
+from .sample_sheet_util import (
+    OptionalSampleSheetRows,
+    validate_row,
+)
+
+
+class SampleSheetDatasetCollectionType(BaseDatasetCollectionType):
+    """A flat list of named elements starting rows with column metadata."""
+
+    collection_type = "sample_sheet"
+
+    def generate_elements(self, dataset_instances, **kwds):
+        rows = cast(OptionalSampleSheetRows, kwds.get("rows", None))
+        column_definitions = kwds.get("column_definitions", None)
+        if rows is None:
+            raise RequestParameterMissingException(
+                "Missing or null parameter 'rows' required for 'sample_sheet' collection types."
+            )
+        if len(dataset_instances) != len(rows):
+            self._validation_failed("Supplied element do not match 'rows'.")
+
+        all_element_identifiers = list(dataset_instances.keys())
+        for identifier, element in dataset_instances.items():
+            columns = rows[identifier]
+            validate_row(columns, column_definitions, all_element_identifiers)
+            association = DatasetCollectionElement(
+                element=element,
+                element_identifier=identifier,
+                columns=columns,
+            )
+            yield association
diff --git a/lib/galaxy/model/dataset_collections/types/sample_sheet_util.py b/lib/galaxy/model/dataset_collections/types/sample_sheet_util.py
new file mode 100644
index 00000000000..be5e9e77859
--- /dev/null
+++ b/lib/galaxy/model/dataset_collections/types/sample_sheet_util.py
@@ -0,0 +1,173 @@
+import re
+from typing import (
+    Dict,
+    List,
+    Optional,
+    Union,
+)
+
+from pydantic import (
+    BaseModel,
+    ConfigDict,
+    model_validator,
+    RootModel,
+    ValidationError,
+)
+from typing_extensions import Self
+
+from galaxy.exceptions import RequestParameterInvalidException
+from galaxy.schema.schema import (
+    SampleSheetColumnDefinition,
+    SampleSheetColumnDefinitions,
+    SampleSheetColumnType,
+    SampleSheetColumnValueT,
+    SampleSheetRow,
+)
+from galaxy.tool_util_models.parameter_validators import AnySafeValidatorModel
+
+SampleSheetRows = Dict[str, SampleSheetRow]
+OptionalSampleSheetRows = Optional[SampleSheetRows]
+
+
+class SampleSheetColumnDefinitionModel(BaseModel):
+    model_config = ConfigDict(extra="forbid", strict=True)
+    name: str
+    type: SampleSheetColumnType
+    description: Optional[str] = None
+    optional: bool
+    validators: Optional[List[AnySafeValidatorModel]] = None
+    restrictions: Optional[List[SampleSheetColumnValueT]] = None
+    suggestions: Optional[List[SampleSheetColumnValueT]] = None
+    default_value: Optional[SampleSheetColumnValueT] = None
+
+    @model_validator(mode="after")
+    def check_nature_of_default(self) -> Self:
+        default_val = self.default_value
+        # string types default to "", no null values allowed.
+        if self.type == "string" and default_val is None:
+            raise ValueError("string types must specify a default value, perhaps specify the empty string as a default")
+        elif default_val is None:
+            return self
+        # otherwise just check the types line up between type and default_value
+        elif self.type == "string" and not isinstance(default_val, str):
+            raise ValueError("Mismatch between column type and default value type")
+        elif self.type == "int" and not isinstance(default_val, int):
+            raise ValueError("Mismatch between column type and default value type")
+        elif self.type == "float" and not isinstance(default_val, (int, float)):
+            raise ValueError("Mismatch between column type and default value type")
+        elif self.type == "boolean" and not isinstance(default_val, bool):
+            raise ValueError("Mismatch between column type and default value type")
+        return self
+
+    @model_validator(mode="after")
+    def check_column_name_contains_not_special_characters(self) -> Self:
+        name = self.name
+        if has_special_characters(name):
+            raise ValueError(f"Column name '{name}' contains special characters that are not allowed.")
+        return self
+
+
+SampleSheetColumnDefinitionsModel = RootModel[List[SampleSheetColumnDefinitionModel]]
+SampleSheetColumnDefinitionDictOrModel = Union[SampleSheetColumnDefinition, SampleSheetColumnDefinitionModel]
+
+
+def sample_sheet_column_definition_to_model(
+    column_definition: SampleSheetColumnDefinitionDictOrModel,
+) -> SampleSheetColumnDefinitionModel:
+    if isinstance(column_definition, SampleSheetColumnDefinitionModel):
+        return column_definition
+    else:
+        return SampleSheetColumnDefinitionModel.model_validate(column_definition)
+
+
+def validate_column_definitions(column_definitions: Optional[SampleSheetColumnDefinitions]):
+    for column_definition in column_definitions or []:
+        _validate_column_definition(column_definition)
+
+
+def _validate_column_definition(column_definition: SampleSheetColumnDefinition):
+    # we should do most of this with pydantic but I just wanted to especially make sure
+    # we were only using safe validators
+    try:
+        return SampleSheetColumnDefinitionModel.model_validate(column_definition)
+    except ValueError as e:
+        raise RequestParameterInvalidException(str(e))
+    except ValidationError as e:
+        # reuse code to convert this until we have ported the API endpoint to expect this
+        # and then just pass through the ValidationError as-is
+        raise RequestParameterInvalidException(str(e))
+
+
+def validate_row(
+    row: SampleSheetRow, column_definitions: Optional[SampleSheetColumnDefinitions], element_identifiers: List[str]
+):
+    if column_definitions is None:
+        return
+    if len(row) != len(column_definitions):
+        raise RequestParameterInvalidException(
+            "Sample sheet row validation failed, incorrect number of columns specified."
+        )
+    for column_value, column_definition in zip(row, column_definitions):
+        validate_column_value(column_value, column_definition, element_identifiers)
+
+
+def has_special_characters(str_value: str) -> bool:
+    if not re.match(r"^[\w\-_ \?]*$", str_value):
+        return True
+    return False
+
+
+def validate_no_special_characters(column_value: str) -> None:
+    # lets disallow a bunch of stuff to ensure element identifiers are safe and that
+    # there are no control characters that would cause issues with serializing to various
+    # tabular formats (raw TSV/CSV, etc..)
+    if has_special_characters(column_value):
+        raise RequestParameterInvalidException(
+            f"Column value '{column_value}' contains special characters that are not allowed."
+        )
+
+
+def validate_column_value(
+    column_value: SampleSheetColumnValueT,
+    column_definition: SampleSheetColumnDefinitionDictOrModel,
+    element_identifiers: List[str],
+):
+    column_definition_model = sample_sheet_column_definition_to_model(column_definition)
+    column_type = column_definition_model.type
+    if column_value is None and column_definition_model.optional:
+        # if the column is optional, we can skip validation
+        return
+    if column_type == "int":
+        if not isinstance(column_value, int):
+            raise RequestParameterInvalidException(f"{column_value} was not an integer as expected")
+    elif column_type == "float":
+        if not isinstance(column_value, (float, int)):
+            raise RequestParameterInvalidException(f"{column_value} was not a number as expected")
+    elif column_type == "string":
+        if not isinstance(column_value, (str,)):
+            raise RequestParameterInvalidException(f"{column_value} was not a string as expected")
+        validate_no_special_characters(column_value)
+    elif column_type == "boolean":
+        if not isinstance(column_value, (bool,)):
+            raise RequestParameterInvalidException(f"{column_value} was not a boolean as expected")
+    elif column_type == "element_identifier":
+        if not isinstance(column_value, str):
+            raise RequestParameterInvalidException(f"{column_value} was not a string as expected")
+        if column_value not in element_identifiers:
+            raise RequestParameterInvalidException(
+                f"{column_value} was not in the list of valid element identifiers as expected"
+            )
+        validate_no_special_characters(column_value)
+
+    restrictions = column_definition_model.restrictions
+    if restrictions is not None:
+        if column_value not in restrictions:
+            raise RequestParameterInvalidException(
+                f"{column_value} was not in specified list of valid values as expected"
+            )
+    validators = column_definition_model.validators or []
+    for validator in validators:
+        try:
+            validator.statically_validate(column_value)
+        except ValueError as e:
+            raise RequestParameterInvalidException(str(e))
diff --git a/lib/galaxy/model/dataset_collections/types/sample_sheet_workbook.py b/lib/galaxy/model/dataset_collections/types/sample_sheet_workbook.py
new file mode 100644
index 00000000000..042e313332a
--- /dev/null
+++ b/lib/galaxy/model/dataset_collections/types/sample_sheet_workbook.py
@@ -0,0 +1,622 @@
+import base64
+from dataclasses import dataclass
+from json import loads
+from typing import (
+    cast,
+    Dict,
+    List,
+    Optional,
+    Protocol,
+    Tuple,
+    TYPE_CHECKING,
+    Union,
+)
+
+from openpyxl import Workbook
+from openpyxl.styles.protection import Protection
+from openpyxl.worksheet.datavalidation import DataValidation
+from openpyxl.worksheet.worksheet import Worksheet
+from pydantic import (
+    BaseModel,
+    Field,
+)
+from typing_extensions import Literal
+
+from galaxy.exceptions import RequestParameterInvalidException
+from galaxy.model.dataset_collections.rule_target_columns import (
+    column_titles_to_headers,
+    HeaderColumn,
+    InferredColumnMapping,
+    ParsedColumn,
+)
+from galaxy.model.dataset_collections.rule_target_models import (
+    ColumnTarget,
+    COMMON_COLUMN_TARGETS,
+    RuleBuilderMappingTargetKey,
+    target_model_by_type,
+)
+from galaxy.model.dataset_collections.workbook_util import (
+    add_extra_column_help_as_new_sheet,
+    add_instructions_to_sheet,
+    Base64StringT,
+    ContentTypeMessage,
+    CsvDialectInferenceMessage,
+    ExtraColumnsHelpConfiguration,
+    freeze_header_row,
+    HasHelp,
+    HelpConfiguration,
+    index_to_excel_column,
+    load_workbook_from_base64,
+    make_headers_bold,
+    parse_format_messages,
+    ReadOnlyWorkbook,
+    set_column_width,
+)
+from galaxy.schema.schema import SampleSheetColumnValueT
+from galaxy.util import (
+    string_as_bool,
+    string_as_bool_or_none,
+)
+from .sample_sheet_util import (
+    SampleSheetColumnDefinitionModel,
+    SampleSheetColumnDefinitionsModel,
+)
+
+if TYPE_CHECKING:
+    from galaxy.model import (
+        DatasetCollection,
+        DatasetCollectionElement,
+    )
+
+
+class DatasetCollectionElementLike(Protocol):
+    id: int
+    element_identifier: str
+
+
+class DatasetCollectionLike(Protocol):
+    id: int
+    collection_type: str
+    elements: List[DatasetCollectionElementLike]
+
+
+# mypy doesn't recognize "str" and "Mapped[str]" as compatible type signatures,
+# is there a better way to interface out these model objects?
+AnyDatasetCollectionElement = Union["DatasetCollectionElement", DatasetCollectionElementLike]
+AnyDatasetCollection = Union["DatasetCollection", DatasetCollectionLike]
+
+
+DEFAULT_TITLE = "Sample Sheet for Galaxy"
+URI_HELP = "The URL/URI for the target file."
+
+PrefixRowValuesT = List[List[SampleSheetColumnValueT]]
+InternalSampleSheetColumnValueT = Union[SampleSheetColumnValueT, "ModelObjectPrefixValue"]
+InternalPrefixRowValuesT = List[List[InternalSampleSheetColumnValueT]]
+
+CreateTitleField = Field(
+    DEFAULT_TITLE,
+    title="Title of the workbook to generate",
+    description="A short title to give the workbook.",
+)
+
+ColumnDefinitionsField: List[SampleSheetColumnDefinitionModel] = Field(
+    ...,
+    title="Column Descriptions",
+    description="A description of the columns expected in the workbook after the first columns described by 'prefix_columns_type'",
+)
+
+WorkbookContentField: Base64StringT = Field(
+    ...,
+    title="Workbook Content (Base 64 encoded)",
+    description="The workbook content (the contents of the xlsx file) that have been base64 encoded.",
+)
+PrefixRowsField: Optional[PrefixRowValuesT] = Field(
+    None,
+    title="Prefix sample sheet values",
+    description="An area to pre-populate URIs, etc...",
+)
+
+SampleSheetCollectionType = Literal[
+    "sample_sheet", "sample_sheet:paired", "sample_sheet:paired_or_unpaired", "sample_sheet:record"
+]
+
+ParsedRow = Dict[str, SampleSheetColumnValueT]
+ParsedRows = List[ParsedRow]
+
+AnyLogMessage = Union[InferredColumnMapping, ContentTypeMessage, CsvDialectInferenceMessage]
+
+SampleSheetParseLog = List[AnyLogMessage]
+
+
+class ParsedWorkbook(BaseModel):
+    rows: ParsedRows
+    # extra columns contained in the supplied workbook that have relevant Galaxy metadata
+    # maybe should be thought of as "suffix_columns" since they are after the prefix columns
+    # and user-defined columns.
+    extra_columns: List[ParsedColumn]
+    parse_log: SampleSheetParseLog
+
+
+class CreateWorkbookFromBase64(BaseModel):
+    title: str = CreateTitleField
+    collection_type: SampleSheetCollectionType
+    prefix_columns_type: Literal["URI"] = "URI"
+    column_definitions: Base64StringT
+    prefix_values: Optional[Base64StringT] = None
+
+
+@dataclass
+class CreateWorkbookFromBase64ForCollection:
+    title: str
+    dataset_collection: AnyDatasetCollection
+    column_definitions: Base64StringT
+
+
+class CreateWorkbook(BaseModel):
+    title: str = CreateTitleField
+    collection_type: SampleSheetCollectionType
+    prefix_columns_type: Literal["URI", "ModelObjects"] = "URI"
+    column_definitions: List[SampleSheetColumnDefinitionModel] = ColumnDefinitionsField
+    prefix_values: Optional[InternalPrefixRowValuesT] = None
+
+
+@dataclass
+class CreateWorkbookForCollection:
+    title: str
+    dataset_collection: AnyDatasetCollection
+    column_definitions: List[SampleSheetColumnDefinitionModel] = ColumnDefinitionsField
+
+
+class ParseWorkbook(BaseModel):
+    collection_type: SampleSheetCollectionType
+    prefix_columns_type: Literal["URI", "ModelObjects"] = "URI"
+    column_definitions: List[SampleSheetColumnDefinitionModel] = ColumnDefinitionsField
+    content: str = WorkbookContentField
+
+
+@dataclass
+class ParseWorkbookForCollection:
+    dataset_collection: AnyDatasetCollection
+    column_definitions: List[SampleSheetColumnDefinitionModel] = ColumnDefinitionsField
+    content: str = WorkbookContentField
+
+
+AnyParseWorkbook = Union[ParseWorkbook, ParseWorkbookForCollection]
+
+
+INSTRUCTIONS = [
+    "Use this spreadsheet to describe your samples. For each sample (i.e. each file), ensure all the labeled columns are specified and correct.",
+    "If you're using Google Sheets, data validation will be applied automatically - just make sure no cell values have a red mark indicating they are invalid.",
+    "If you're using Microsft Excel, it is best to run data validation after you've completed filling out this sheet. This can be done by clicking on 'Data' > 'Data Validation' > 'Circle Invalid Data'.",
+    "Once data entry is complete, drop this file back into Galaxy to finish creating a sample sheet collection for your inputs.",
+]
+
+# the first columns are very different based on what we're creating here, TODO write instructions
+# for each collection type
+INSTRUCTIONS_BY_COLLECTION_TYPE: Dict[SampleSheetCollectionType, List[str]] = cast(
+    Dict[SampleSheetCollectionType, List[str]],
+    {
+        "sample_sheet": INSTRUCTIONS,
+        "sample_sheet:paired": INSTRUCTIONS,
+        "sample_sheet:paired_or_unpaired": INSTRUCTIONS,
+        "sample_sheet:record": INSTRUCTIONS,
+    },
+)
+
+EXTRA_COLUMN_INSTRUCTIONS = [
+    "Extra metadata for the uploaded datasets can be specified by just adding columns with special headers to the sheet.",
+    "These columns must be added *AFTER* the columns defined in the sample sheet.",
+    "The list of column metadata type appears in this sheet and example column names are provided.",
+]
+
+
+def parse_workbook(payload: ParseWorkbook) -> ParsedWorkbook:
+    workbook: ReadOnlyWorkbook = load_workbook_from_base64(payload.content)
+    parse_log: SampleSheetParseLog = []
+    parse_log.extend(parse_format_messages(workbook))
+    extra_columns, inferred_columns_log = _read_extra_column_headers(workbook, payload)
+    parse_log.extend(inferred_columns_log)
+    rows = _load_row_data(workbook, payload, extra_columns)
+    if not workbook.typed:
+        _normalize_rows(rows, payload)
+    return ParsedWorkbook(
+        rows=rows,
+        extra_columns=[c.parsed_column for c in extra_columns],
+        parse_log=parse_log,
+    )
+
+
+def _normalize_rows(rows: ParsedRows, payload: AnyParseWorkbook) -> None:
+    """Match column definition types to row values.
+
+    The excel reader does not require this, it reads in typed values for both integers,
+    floats, and booleans, but the csv reader does not do any of that and so we should
+    validate all that here and normalize the expectations.
+
+    This does not throw exceptions on validation errors it just fixes the types if they
+    fix cleanly. Validation errors need to be uniform across both types of workbooks and
+    this code does not apply to Excel.
+    """
+    column_definitions = payload.column_definitions
+    for row in rows:
+        for column_definition in column_definitions:
+            column_name = column_definition.name
+            if column_name not in row:
+                continue
+            value = row[column_name]
+            if value is None and column_definition.optional:
+                continue
+            elif value is None:
+                value = ""
+            if value == "" and column_definition.optional:
+                continue
+
+            if column_definition.type == "int":
+                try:
+                    row[column_name] = int(value)
+                except ValueError:
+                    # TODO: capture this and log it.
+                    pass
+            elif column_definition.type == "float":
+                try:
+                    row[column_name] = float(value)
+                except ValueError:
+                    # TODO: capture this and log it.
+                    pass
+            elif column_definition.type == "boolean":
+                if isinstance(value, bool):
+                    continue
+                if isinstance(value, str):
+                    if column_definition.optional:
+                        row[column_name] = string_as_bool_or_none(value)
+                    else:
+                        row[column_name] = string_as_bool(value)
+                else:
+                    # TODO: capture this and log it.
+                    pass
+
+
+def _read_extra_column_headers(
+    workbook: ReadOnlyWorkbook, payload: AnyParseWorkbook
+) -> Tuple[List[HeaderColumn], List[InferredColumnMapping]]:
+    required_prefix_columns = prefix_columns(payload)
+    required_column_names = [c.name for c in required_prefix_columns] + [c.name for c in payload.column_definitions]
+    num_required_columns = len(required_column_names)
+    column_titles = workbook.column_titles()
+    extra_headers = column_titles[num_required_columns:]
+    return column_titles_to_headers(extra_headers, column_offset=num_required_columns)
+
+
+def parse_workbook_for_collection(payload: ParseWorkbookForCollection) -> ParsedWorkbook:
+    workbook = load_workbook_from_base64(payload.content)
+    parse_log: SampleSheetParseLog = []
+    parse_log.extend(parse_format_messages(workbook))
+    rows = _load_row_data(workbook, payload, [])
+    return ParsedWorkbook(rows=rows, extra_columns=[], parse_log=parse_log)
+
+
+# a base64 version of this so we can do short get URLs with real links in the API.
+def generate_workbook_from_base64(payload: CreateWorkbookFromBase64) -> Workbook:
+    decoded_column_definitions = base64.b64decode(payload.column_definitions)
+    column_definitions = SampleSheetColumnDefinitionsModel.model_validate_json(decoded_column_definitions).root
+
+    prefix_values = None
+    if payload.prefix_values:
+        decoded_prefix_values = base64.b64decode(payload.prefix_values)
+        prefix_values = loads(decoded_prefix_values)
+
+    create_object = CreateWorkbook(
+        collection_type=payload.collection_type,
+        title=payload.title,
+        prefix_columns_type=payload.prefix_columns_type,
+        prefix_values=prefix_values,
+        column_definitions=column_definitions,
+    )
+    return generate_workbook(create_object)
+
+
+def generate_workbook_from_base64_for_collection(payload: CreateWorkbookFromBase64ForCollection) -> Workbook:
+    decoded_bytes = base64.b64decode(payload.column_definitions)
+    column_definitions = SampleSheetColumnDefinitionsModel.model_validate_json(decoded_bytes).root
+    create_object = CreateWorkbookForCollection(
+        title=payload.title,
+        dataset_collection=payload.dataset_collection,
+        column_definitions=column_definitions,
+    )
+    return generate_workbook_for_collection(create_object)
+
+
+class ModelObjectPrefixValue(BaseModel):
+    model_class: Literal["DatasetCollectionElement"]
+    element_id: int
+    element_identifier: str
+
+    @staticmethod
+    def from_dataset_collection_element(dce: AnyDatasetCollectionElement) -> "ModelObjectPrefixValue":
+        return ModelObjectPrefixValue(
+            model_class="DatasetCollectionElement",
+            element_id=dce.id,
+            element_identifier=dce.element_identifier,
+        )
+
+
+def generate_workbook(payload: CreateWorkbook) -> Workbook:
+    prefix_column_types = payload.prefix_columns_type
+    collection_type = payload.collection_type
+    instructions = INSTRUCTIONS_BY_COLLECTION_TYPE[collection_type]
+
+    # Create a workbook and select the active worksheet
+    workbook = Workbook()
+    worksheet = workbook.active
+    worksheet.title = payload.title
+
+    column_definitions = payload.column_definitions
+    the_prefix_columns = prefix_columns(payload)
+    num_initial_columns = len(the_prefix_columns)
+    headers: List[HasHelp] = [c.has_help for c in the_prefix_columns] + [
+        HasHelp(cd.name, cd.description or "") for cd in column_definitions
+    ]
+    worksheet.append([h.title for h in headers])
+    make_headers_bold(worksheet, headers)
+
+    for index, header in enumerate(headers):
+        if "URI" in header.title:
+            width = 80
+        else:
+            width = 20
+        set_column_width(worksheet, index, width)
+
+    _add_prefix_column_validations(payload, worksheet)
+    freeze_header_row(worksheet)
+
+    for index, column_definition in enumerate(column_definitions):
+        validation: Optional[DataValidation] = None
+        if column_definition.type == "int":
+            validation = DataValidation(type="whole", allow_blank=True)
+            # TODO: operator="between", formula1="1", formula2="1000"
+        elif column_definition.type == "float":
+            validation = DataValidation(type="decimal", allow_blank=True)
+            # TODO: operator="between", formula1="1", formula2="1000"
+        elif column_definition.type == "boolean":
+            column_str = index_to_excel_column(index + num_initial_columns)
+            validation = DataValidation(
+                type="custom",
+                formula1=f"OR({column_str}2=TRUE, {column_str}2=FALSE)",
+                showDropDown=False,
+                allow_blank=True,
+            )
+
+            dropdown_validation = DataValidation(
+                type="list", formula1='"TRUE,FALSE"', showDropDown=False, allow_blank=True
+            )
+            _add_validation(index_to_excel_column(index + num_initial_columns), dropdown_validation, worksheet)
+        elif column_definition.restrictions:
+            list_as_formula = ",".join([str(r) for r in column_definition.restrictions])
+            validation = DataValidation(
+                type="list", formula1=f'"{list_as_formula}"', showDropDown=False, allow_blank=True
+            )
+            validation.prompt = "Please select from the list"
+
+        if validation:
+            validation.error = "Invalid input"
+            validation.errorTitle = "Error"
+            validation.promptTitle = column_definition.name
+            _add_validation(index_to_excel_column(index + num_initial_columns), validation, worksheet)
+
+    help_configuration = HelpConfiguration(
+        instructions=instructions,
+        columns=headers,
+        text_width=50,
+        column_width=50,
+    )
+    add_instructions_to_sheet(
+        worksheet,
+        help_configuration,
+    )
+
+    prefix_rows = payload.prefix_values or []
+    prefix_rows_offset = 2  # header + 1-index-ed data structure
+    for row_index, row in enumerate(prefix_rows):
+        for column_index, col_value in enumerate(row):
+            if isinstance(col_value, ModelObjectPrefixValue):
+                col_value = col_value.element_identifier
+            worksheet.cell(row=row_index + prefix_rows_offset, column=column_index + 1, value=col_value)
+
+    if prefix_column_types == "ModelObjects":
+        model_object_prefix_values = cast(List[ModelObjectPrefixValue], payload.prefix_values)
+        _lock_sheet_for_existing_collection(worksheet, model_object_prefix_values, column_definitions)
+
+        # Add another worksheet - is this what caused "corruption"?
+        # additional_worksheet = workbook.create_sheet(title="Internal Galaxy Tracking (do not edit)")
+
+    if prefix_column_types != "ModelObjects":
+        extra_column_configuration = ExtraColumnsHelpConfiguration(
+            EXTRA_COLUMN_INSTRUCTIONS, text_width=50, column_targets=COMMON_COLUMN_TARGETS
+        )
+        add_extra_column_help_as_new_sheet(workbook, extra_column_configuration)
+    return workbook
+
+
+def generate_workbook_for_collection(payload: CreateWorkbookForCollection) -> Workbook:
+    input_collection_type = payload.dataset_collection.collection_type
+    sample_sheet_collection_type = _list_to_sample_sheet_collection_type(input_collection_type)
+
+    prefix_values: List[List[ModelObjectPrefixValue]] = []
+    for element in payload.dataset_collection.elements:
+        prefix_values.append([ModelObjectPrefixValue.from_dataset_collection_element(element)])
+
+    create_workbook = CreateWorkbook(
+        title=payload.title,
+        collection_type=sample_sheet_collection_type,
+        prefix_columns_type="ModelObjects",
+        column_definitions=payload.column_definitions,
+        prefix_values=prefix_values,
+    )
+    return generate_workbook(create_workbook)
+
+
+@dataclass
+class FetchPrefixColumn:
+    type: RuleBuilderMappingTargetKey
+    title: str  # user facing
+    # e.g. for paired data will have two columns of URIs, record types maybe have any number
+    # and after dataset hash may have multiples of those also
+    type_index: int
+
+    @property
+    def name(self):
+        if self.type_index == 0:
+            return self.type
+        else:
+            return f"{self.type}_{self.type_index}"
+
+    @property
+    def help(self) -> str:
+        column_target = _prefix_column_to_column_target(self)
+        return column_target.help if column_target.help else ""
+
+    @property
+    def has_help(self):
+        return HasHelp(title=self.title, help=self.title)
+
+
+def prefix_columns(payload: Union[CreateWorkbook, AnyParseWorkbook]) -> List[FetchPrefixColumn]:
+    if isinstance(payload, (CreateWorkbook, ParseWorkbook)):
+        collection_type = payload.collection_type
+        columns_type = payload.prefix_columns_type
+    elif isinstance(payload, ParseWorkbookForCollection):
+        list_collection_type = payload.dataset_collection.collection_type
+        collection_type = _list_to_sample_sheet_collection_type(list_collection_type)
+        columns_type = "ModelObjects"
+
+    def uri_column(column_title: str, type_index: int = 0) -> FetchPrefixColumn:
+        return FetchPrefixColumn(
+            type="url",
+            title=column_title,
+            type_index=type_index,
+        )
+
+    def element_identifier_column() -> FetchPrefixColumn:
+        return FetchPrefixColumn(
+            type="list_identifiers",
+            title="Element identifier",
+            type_index=0,
+        )
+
+    if columns_type == "URI":
+        if collection_type == "sample_sheet":
+            columns = [uri_column("URI"), element_identifier_column()]
+        elif collection_type == "sample_sheet:paired":
+            columns = [uri_column("URI 1 (forward)"), uri_column("URI 2 (reverse)", 1), element_identifier_column()]
+        elif collection_type == "sample_sheet:paired_or_unpaired":
+            columns = [
+                uri_column("URI 1 (forward if paired)"),
+                uri_column("URI 2 (optional - reverse if paired)", 1),
+                element_identifier_column(),
+            ]
+        else:
+            raise NotImplementedError()
+    elif columns_type == "ModelObjects":
+        columns = [
+            # override help?
+            # "Element identifier of existing Galaxy collection, do not edit this value."
+            FetchPrefixColumn(type="list_identifiers", title="Element Identifier", type_index=0)
+        ]
+    else:
+        raise NotImplementedError("Unknown and unimplemented columns type encountered {columns_type}")
+    return columns
+
+
+def prefix_column_names(payload: Union[CreateWorkbook, AnyParseWorkbook]) -> List[str]:
+    return [c.title for c in prefix_columns(payload)]
+
+
+def prefix_column_counts(payload: CreateWorkbook) -> int:
+    return len(prefix_columns(payload))
+
+
+def _add_prefix_column_validations(payload: CreateWorkbook, worksheet: Worksheet):
+    prefix_column_types = payload.prefix_columns_type
+    if prefix_column_types == "URI":
+        for i in range(prefix_column_counts(payload)):
+            # Add data validation for "URI" column
+            # We cannot assume http/https since drs, gxfiles, etc... are all fine
+            uri_validation = DataValidation(type="custom", formula1='=ISNUMBER(FIND("://", E2))', allow_blank=True)
+            uri_validation.error = "Invalid URI"
+            uri_validation.errorTitle = "Error"
+            uri_validation.showErrorMessage = True
+            _add_validation(index_to_excel_column(i), uri_validation, worksheet)
+    elif prefix_column_types == "ModelObjects":
+        # these should be locked identifiers, no need to validate?
+        # excel online prevents editing these but Google Sheets allows.
+        pass
+    else:
+        raise NotImplementedError("Unknown and unimplemented columns type encountered {columns_type}")
+
+
+def _lock_sheet_for_existing_collection(
+    worksheet: Worksheet,
+    prefix_values: List[ModelObjectPrefixValue],
+    column_definitions: List[SampleSheetColumnDefinitionModel],
+) -> None:
+    worksheet.protection.sheet = True
+    for column_prefix_index in range(len(column_definitions)):
+        for row_prefix_index in range(len(prefix_values)):
+            sheet_column_prefix_index = column_prefix_index + 1  # advance one column for the element identifier
+            sheet_row_prefix_index = row_prefix_index + 1  # advance one column for column headers
+            # advance one more for 1-based indices in format
+            cell = worksheet.cell(sheet_row_prefix_index + 1, sheet_column_prefix_index + 1)
+            cell.protection = Protection(locked=False)
+
+
+def _add_validation(column: str, data_validation: DataValidation, worksheet: Worksheet):
+    worksheet.add_data_validation(data_validation)
+    data_validation.add(f"{column}2:{column}1048576")
+
+
+def _load_row_data(
+    workbook: ReadOnlyWorkbook, payload: AnyParseWorkbook, extra_columns: List[HeaderColumn]
+) -> ParsedRows:
+    rows: ParsedRows = []
+
+    the_prefix_columns = prefix_columns(payload)
+    column_names = [c.name for c in the_prefix_columns] + [c.name for c in payload.column_definitions]
+    if extra_columns:
+        column_names += [c.name for c in extra_columns]
+    columns_to_read = len(column_names)
+    for row_index, row in enumerate(workbook.iter_rows(columns_to_read)):
+        if row_index == 0:  # skip column headers
+            continue
+        if not row[0]:
+            break
+        parsed_row: ParsedRow = {}
+        for value, column_name in zip(row, column_names):
+            parsed_row[column_name] = value
+        rows.append(parsed_row)
+    return rows
+
+
+def _list_to_sample_sheet_collection_type(input_collection_type: str) -> SampleSheetCollectionType:
+    """Convert simple list collection types to corresponding sample_sheet collection types.
+
+    What would the sample_sheet collection type that allows decorating that kind of list. For instance,
+    list:paired becomes sample_sheet:paired.
+    """
+    sample_sheet_collection_type: Optional[SampleSheetCollectionType] = None
+    if input_collection_type == "list":
+        sample_sheet_collection_type = "sample_sheet"
+    elif input_collection_type == "list:paired":
+        sample_sheet_collection_type = "sample_sheet:paired"
+    elif input_collection_type == "list:paired_or_unpaired":
+        sample_sheet_collection_type = "sample_sheet:paired_or_unpaired"
+    elif input_collection_type == "list:record":
+        raise NotImplementedError("Work in progress, this has not bee implemented yet")
+    else:
+        raise RequestParameterInvalidException(
+            f"Invalid collection type for sample sheet workbook generation {input_collection_type}"
+        )
+    return sample_sheet_collection_type
+
+
+def _prefix_column_to_column_target(column_header: FetchPrefixColumn) -> ColumnTarget:
+    return target_model_by_type(column_header.type)
diff --git a/lib/galaxy/model/dataset_collections/workbook_util.py b/lib/galaxy/model/dataset_collections/workbook_util.py
index 06a56dade48..3366d0fbe2f 100644
--- a/lib/galaxy/model/dataset_collections/workbook_util.py
+++ b/lib/galaxy/model/dataset_collections/workbook_util.py
@@ -301,7 +301,7 @@ def add_extra_column_help_as_new_sheet(workbook: Workbook, extra_columns_help: E
     for column_target in extra_columns_help.column_targets:
         worksheet.cell(row=current_row, column=1, value=column_target.label)
         worksheet.cell(row=current_row, column=2, value=column_target.help)
-        worksheet.cell(row=current_row, column=3, value=column_target.columnHeader or "")
+        worksheet.cell(row=current_row, column=3, value=column_target.example_column_names_as_str)
         current_row += 1
 
     help_label_index = 6
diff --git a/lib/galaxy/model/store/__init__.py b/lib/galaxy/model/store/__init__.py
index 10200e41567..6193b71b630 100644
--- a/lib/galaxy/model/store/__init__.py
+++ b/lib/galaxy/model/store/__init__.py
@@ -837,6 +837,7 @@ class ModelImportStore(metaclass=abc.ABCMeta):
                         element=model.DatasetCollectionElement.UNINITIALIZED_ELEMENT,
                         element_index=element_attrs["element_index"],
                         element_identifier=element_attrs["element_identifier"],
+                        columns=element_attrs.get("columns"),
                     )
                     if "encoded_id" in element_attrs:
                         object_import_tracker.dces_by_key[element_attrs["encoded_id"]] = dce
diff --git a/lib/galaxy/model/store/discover.py b/lib/galaxy/model/store/discover.py
index 9301509db79..8bc91139cab 100644
--- a/lib/galaxy/model/store/discover.py
+++ b/lib/galaxy/model/store/discover.py
@@ -375,6 +375,7 @@ class ModelPersistenceContext(metaclass=abc.ABCMeta):
             "tag_lists": [],
             "paths": [],
             "extra_files": [],
+            "rows": [],
         }
         ext_override = change_datatype_actions.get(name)
         for discovered_file in chunk:
@@ -431,13 +432,18 @@ class ModelPersistenceContext(metaclass=abc.ABCMeta):
             element_datasets["datasets"].append(dataset)
             element_datasets["tag_lists"].append(discovered_file.match.tag_list)
             element_datasets["paths"].append(filename)
+            element_datasets["rows"].append(discovered_file.match.row)
 
         self.add_tags_to_datasets(datasets=element_datasets["datasets"], tag_lists=element_datasets["tag_lists"])
-        for element_identifiers, dataset in zip(element_datasets["element_identifiers"], element_datasets["datasets"]):
+        for element_identifiers, dataset, row in zip(
+            element_datasets["element_identifiers"], element_datasets["datasets"], element_datasets["rows"]
+        ):
             current_builder: CollectionBuilder = root_collection_builder
             for element_identifier in element_identifiers[:-1]:
-                current_builder = current_builder.get_level(element_identifier)
-            current_builder.add_dataset(element_identifiers[-1], dataset)
+                current_builder = current_builder.get_level(element_identifier, row=row)
+                if row:
+                    row = None
+            current_builder.add_dataset(element_identifiers[-1], dataset, row=row)
 
             # Associate new dataset with job
             element_identifier_str = ":".join(element_identifiers)
@@ -794,11 +800,25 @@ def persist_elements_to_hdca(
 ):
     discovered_files: List[DiscoveredResult] = []
 
-    def add_to_discovered_files(elements, parent_identifiers=None):
+    collection = hdca.collection
+    root_collection_builder = BoundCollectionBuilder(collection)
+
+    def add_to_discovered_files(elements, parent_identifiers=None, collection_builder=None):
+        if collection_builder is None:
+            collection_builder = root_collection_builder
+
         parent_identifiers = parent_identifiers or []
         for element in elements:
             if "elements" in element:
-                add_to_discovered_files(element["elements"], parent_identifiers + [element["name"]])
+                element_collection_builder = collection_builder.get_level(
+                    element["name"],
+                    row=element.get("row"),
+                )
+                add_to_discovered_files(
+                    element["elements"],
+                    parent_identifiers + [element["name"]],
+                    collection_builder=element_collection_builder,
+                )
             else:
                 discovered_file = discovered_file_for_element(
                     element, model_persistence_context, parent_identifiers, collector=collector
@@ -807,14 +827,12 @@ def persist_elements_to_hdca(
 
     add_to_discovered_files(elements)
 
-    collection = hdca.collection
-    collection_builder = BoundCollectionBuilder(collection)
     model_persistence_context.populate_collection_elements(
         collection,
-        collection_builder,
+        root_collection_builder,
         discovered_files,
     )
-    collection_builder.populate()
+    root_collection_builder.populate()
 
 
 def persist_elements_to_folder(
@@ -1159,6 +1177,10 @@ class JsonCollectedDatasetMatch:
     def effective_state(self):
         return self.as_dict.get("state") or "ok"
 
+    @property
+    def row(self):
+        return self.as_dict.get("row") or None
+
 
 class RegexCollectedDatasetMatch(JsonCollectedDatasetMatch):
     def __init__(self, re_match, collector: Optional[CollectorT], filename, path=None):
diff --git a/lib/galaxy/model/unittest_utils/filled_in_workbook_1.tsv b/lib/galaxy/model/unittest_utils/filled_in_workbook_1.tsv
new file mode 100644
index 00000000000..ea6541059b8
--- /dev/null
+++ b/lib/galaxy/model/unittest_utils/filled_in_workbook_1.tsv
@@ -0,0 +1,9 @@
+URI	"Element identifier"	"replicate number"	treatment	"is control?"				
+https://zenodo.org/records/3263975/files/DRR000770.fastqsanger.gz	DRR000770	1	treatment1	false				
+https://zenodo.org/records/3263975/files/DRR000771.fastqsanger.gz	DRR000771	2	treatment1	false		Instructions		
+https://zenodo.org/records/3263975/files/DRR000772.fastqsanger.gz	DRR000772	1	none	true			> 1.	Use this spreadsheet to describe your samples. For each sample (i.e. each file), ensure all the labeled columns are specified and correct.
+https://zenodo.org/records/3263975/files/DRR000773.fastqsanger.gz	DRR000773	1	treatment2	false			> 2.	If you're using Google Sheets, data validation will be applied automatically - just make sure no cell values have a red mark indicating they are invalid.
+https://zenodo.org/records/3263975/files/DRR000774.fastqsanger.gz	DRR000774	2	treatment3	false			> 3.	If you're using Microsft Excel, it is best to run data validation after you've completed filling out this sheet. This can be done by clicking on 'Data' > 'Data Validation' > 'Circle Invalid Data'.
+https://zenodo.org/records/3263975/files/DRR000775.fastqsanger.gz	DRR000775	badnumber	treatment2	false			> 4.	Once data entry is complete, drop this file back into Galaxy to finish creating a sample sheet collection for your inputs.
+https://zenodo.org/records/3263975/files/DRR000776.fastqsanger.gz	DRR000776	2	wrongtreament	false				
+https://zenodo.org/records/3263975/files/DRR000777.fastqsanger.gz	DRR000777	3	treatment2	badbool		Columns		
diff --git a/lib/galaxy/model/unittest_utils/filled_in_workbook_1.xlsx b/lib/galaxy/model/unittest_utils/filled_in_workbook_1.xlsx
new file mode 100644
index 00000000000..84417f846fa
Binary files /dev/null and b/lib/galaxy/model/unittest_utils/filled_in_workbook_1.xlsx differ
diff --git a/lib/galaxy/model/unittest_utils/filled_in_workbook_1_with_dbkey.xlsx b/lib/galaxy/model/unittest_utils/filled_in_workbook_1_with_dbkey.xlsx
new file mode 100644
index 00000000000..b2a20f5de3e
Binary files /dev/null and b/lib/galaxy/model/unittest_utils/filled_in_workbook_1_with_dbkey.xlsx differ
diff --git a/lib/galaxy/model/unittest_utils/filled_in_workbook_from_collection.xlsx b/lib/galaxy/model/unittest_utils/filled_in_workbook_from_collection.xlsx
new file mode 100644
index 00000000000..ea6357c5fdd
Binary files /dev/null and b/lib/galaxy/model/unittest_utils/filled_in_workbook_from_collection.xlsx differ
diff --git a/lib/galaxy/model/unittest_utils/filled_in_workbook_paired.xlsx b/lib/galaxy/model/unittest_utils/filled_in_workbook_paired.xlsx
new file mode 100644
index 00000000000..973ce7de78d
Binary files /dev/null and b/lib/galaxy/model/unittest_utils/filled_in_workbook_paired.xlsx differ
diff --git a/lib/galaxy/model/unittest_utils/filled_in_workbook_paired_or_unpaired.xlsx b/lib/galaxy/model/unittest_utils/filled_in_workbook_paired_or_unpaired.xlsx
new file mode 100644
index 00000000000..caddb106f29
Binary files /dev/null and b/lib/galaxy/model/unittest_utils/filled_in_workbook_paired_or_unpaired.xlsx differ
diff --git a/lib/galaxy/schema/fetch_data.py b/lib/galaxy/schema/fetch_data.py
index daf9c905dfe..2bfcfb42bea 100644
--- a/lib/galaxy/schema/fetch_data.py
+++ b/lib/galaxy/schema/fetch_data.py
@@ -20,7 +20,11 @@ from typing_extensions import (
 )
 
 from galaxy.schema.fields import DecodedDatabaseIdField
-from galaxy.schema.schema import Model
+from galaxy.schema.schema import (
+    Model,
+    SampleSheetColumnDefinitions,
+    SampleSheetRow,
+)
 from galaxy.schema.types import CoercedStringType
 
 
@@ -85,6 +89,7 @@ class BaseCollectionTarget(BaseFetchDataTarget):
     collection_type: Optional[str] = None
     tags: Optional[List[str]] = None
     name: Optional[str] = None
+    column_definitions: Optional[SampleSheetColumnDefinitions] = None
 
 
 class LibraryDestination(FetchBaseModel):
@@ -131,6 +136,8 @@ class BaseDataElement(FetchBaseModel):
     hashes: Optional[List[FetchDatasetHash]] = None
     description: Optional[str] = None
     model_config = ConfigDict(extra="forbid")
+    # It'd be nice to restrict this to just the top level and only if creating a collection
+    row: Optional[SampleSheetRow] = None
 
 
 class FileDataElement(BaseDataElement):
diff --git a/lib/galaxy/schema/schema.py b/lib/galaxy/schema/schema.py
index d954726aa02..77f6c411188 100644
--- a/lib/galaxy/schema/schema.py
+++ b/lib/galaxy/schema/schema.py
@@ -33,6 +33,8 @@ from pydantic_core import core_schema
 from typing_extensions import (
     Annotated,
     Literal,
+    NotRequired,
+    TypedDict,
 )
 
 from galaxy.schema import partial_model
@@ -358,6 +360,33 @@ class LimitedUserModel(Model):
 
 MaybeLimitedUserModel = Union[UserModel, LimitedUserModel]
 
+# named in compatibility with CWL - trying to keep CWL fields in mind with
+# this implementation. https://www.commonwl.org/user_guide/topics/inputs.html#inputs
+# element_identifier is not like CWL - it is used to specify the value in the row should
+# be the element_identifier for another element if present. It is a way to specify relationships
+# between elements in the collection - specifically implemented for the "control" use case.
+SampleSheetColumnType = Literal[
+    "string", "int", "float", "boolean", "element_identifier"
+]  # excluding "long" and "double" and composite types from CWL for now - we don't think at this level of abstraction in Galaxy generally
+NoneType = type(None)
+SampleSheetColumnValueT = Union[int, float, bool, str, NoneType]
+
+
+class SampleSheetColumnDefinition(TypedDict):
+    name: str
+    description: NotRequired[Optional[str]]
+    type: SampleSheetColumnType
+    optional: bool
+    default_value: NotRequired[Optional[SampleSheetColumnValueT]]
+    validators: NotRequired[Optional[List[Dict[str, Any]]]]
+    restrictions: NotRequired[Optional[List[SampleSheetColumnValueT]]]
+    suggestions: NotRequired[Optional[List[SampleSheetColumnValueT]]]
+
+
+SampleSheetColumnDefinitions = List[SampleSheetColumnDefinition]
+SampleSheetRow = List[SampleSheetColumnValueT]
+SampleSheetRows = Dict[str, SampleSheetRow]
+
 
 class DiskUsageUserModel(Model):
     total_disk_usage: float = TotalDiskUsageField
@@ -1031,6 +1060,11 @@ class DCESummary(Model, WithModelClass):
         title="Object",
         description="The element's specific data depending on the value of `element_type`.",
     )
+    columns: Optional[SampleSheetRow] = Field(
+        None,
+        title="Columns",
+        description="A row (or list of columns) of data associated with this element",
+    )
 
 
 DCObject.model_rebuild()
@@ -1175,6 +1209,10 @@ class HDCADetailed(HDCASummary):
         None,
         description="Encoded ID for the ICJ object describing the collection of jobs corresponding to this collection",
     )
+    column_definitions: Optional[SampleSheetColumnDefinitions] = Field(
+        None,
+        description="Column data associated with each element of this collection.",
+    )
 
 
 class HistoryContentItemBase(Model):
@@ -1688,6 +1726,16 @@ class CreateNewCollectionPayload(Model):
         title="Element Identifiers",
         description="List of elements that should be in the new collection.",
     )
+    column_definitions: Optional[SampleSheetColumnDefinitions] = Field(
+        default=None,
+        title="Column Definitions",
+        description="Specify definitions for row data if collection_type if sample_sheet",
+    )
+    rows: Optional[SampleSheetRows] = Field(
+        default=None,
+        title="Row data",
+        description="Specify rows of metadata data corresponding to an identifier if collection_type is sample_sheet",
+    )
     name: Optional[str] = Field(
         default=None,
         title="Name",
diff --git a/lib/galaxy/selenium/navigates_galaxy.py b/lib/galaxy/selenium/navigates_galaxy.py
index dcf435d7bc4..4643678a923 100644
--- a/lib/galaxy/selenium/navigates_galaxy.py
+++ b/lib/galaxy/selenium/navigates_galaxy.py
@@ -34,6 +34,7 @@ from selenium.webdriver.common.by import By
 from selenium.webdriver.remote.webdriver import WebDriver
 from selenium.webdriver.remote.webelement import WebElement
 from selenium.webdriver.support import expected_conditions as ec
+from seletools.actions import drag_and_drop
 
 from galaxy.navigation.components import (
     Component,
@@ -209,6 +210,16 @@ class ObjectStoreInstance:
     parameters: List[ConfigTemplateParameter] = field(default_factory=list)
 
 
+@dataclass
+class ColumnDefinition:
+    name: str
+    description: str
+    # I wish these were set by value instead of by text in the text box but this is how select_set_value seems to work
+    type: Literal["Text", "Integer", "Element Identifier"] = "Text"
+    optional: bool = False
+    default_value: Optional[str] = None
+
+
 class NavigatesGalaxy(HasDriver):
     """Class with helpers methods for driving components of the Galaxy interface.
 
@@ -1258,6 +1269,42 @@ class NavigatesGalaxy(HasDriver):
         editor.inputs.input(id=item_name).wait_for_and_click()
         self.sleep_for(self.wait_types.UX_RENDER)
 
+    def workflow_editor_connect(self, source, sink, screenshot_partial=None):
+        source_id, sink_id = self.workflow_editor_source_sink_terminal_ids(source, sink)
+        source_element = self.find_element_by_selector(f"#{source_id}")
+        sink_element = self.find_element_by_selector(f"#{sink_id}")
+        ac = self.action_chains()
+        ac = ac.move_to_element(source_element).click_and_hold()
+        if screenshot_partial:
+            ac = ac.move_by_offset(10, 10)
+            ac.perform()
+            self.sleep_for(self.wait_types.UX_RENDER)
+            self.screenshot(screenshot_partial)
+        drag_and_drop(self.driver, source_element, sink_element)
+
+    def workflow_editor_source_sink_terminal_ids(self, source, sink):
+        editor = self.components.workflow_editor
+
+        source_node_label, source_output = source.split("#", 1)
+        sink_node_label, sink_input = sink.split("#", 1)
+
+        source_node = editor.node._(label=source_node_label)
+        sink_node = editor.node._(label=sink_node_label)
+
+        source_node.wait_for_present()
+        sink_node.wait_for_present()
+
+        output_terminal = source_node.output_terminal(name=source_output)
+        input_terminal = sink_node.input_terminal(name=sink_input)
+
+        output_element = output_terminal.wait_for_present()
+        input_element = input_terminal.wait_for_present()
+
+        source_id = output_element.get_attribute("id").replace("|", r"\|")
+        sink_id = input_element.get_attribute("id").replace("|", r"\|")
+
+        return source_id, sink_id
+
     def workflow_editor_set_license(self, license: str) -> None:
         license_selector = self.components.workflow_editor.license_selector
         license_selector.wait_for_and_click()
@@ -1359,6 +1406,41 @@ class NavigatesGalaxy(HasDriver):
 
         self.sleep_for(self.wait_types.UX_RENDER)
 
+    def workflow_editor_enter_column_definitions(self, column_definitions: List[ColumnDefinition]):
+        for index, column_definition in enumerate(column_definitions):
+            self.workflow_editor_enter_column_definition(column_definition, index)
+
+    def workflow_editor_enter_column_definition(self, column_definition: ColumnDefinition, index: int):
+        editor = self.components.workflow_editor
+
+        editor.add_column_definition.wait_for_and_click()
+        elem = editor.column_definition_name_by_index(index=index).wait_for_and_clear_and_send_keys(
+            column_definition.name
+        )
+        self.sleep_for(self.wait_types.UX_RENDER)
+        # seems like a Galaxy bug that these enter's are needed? - they are not when manually inputting things a human speeds
+        self.send_enter(elem)
+        elem = editor.column_definition_description_by_index(index=index).wait_for_and_clear_and_send_keys(
+            column_definition.description
+        )
+        self.sleep_for(self.wait_types.UX_RENDER)
+        self.send_enter(elem)
+        component = editor.column_definition_type_by_index(index=index)
+        self.select_set_value(component, column_definition.type)
+        self.sleep_for(self.wait_types.UX_RENDER)
+        if column_definition.optional:
+            elem = editor.column_definition_optional_by_index(index=index).wait_for_present()
+            action_chains = self.action_chains()
+            action_chains.move_to_element(elem).click().perform()
+            self.sleep_for(self.wait_types.UX_RENDER)
+
+        if column_definition.default_value is not None:
+            elem = editor.column_definition_default_value_by_index(index=index).wait_for_and_clear_and_send_keys(
+                column_definition.default_value
+            )
+            self.send_enter(elem)
+            self.sleep_for(self.wait_types.UX_RENDER)
+
     def navigate_to_histories_page(self):
         self.home()
         self.components.histories.activity.wait_for_and_click()
@@ -1583,6 +1665,11 @@ class NavigatesGalaxy(HasDriver):
         self.home()
         self.click_activity_workflow()
 
+    def workflow_index_open_with_name(self, name: str):
+        self.workflow_index_open()
+        self.workflow_index_search_for(name)
+        self.components.workflows.edit_button.wait_for_and_click()
+
     def workflow_shared_with_me_open(self):
         self.workflow_index_open()
         self.components.workflows.shared_with_me_tab.wait_for_and_click()
@@ -2477,6 +2564,7 @@ class NavigatesGalaxy(HasDriver):
             text_input = None
         if text_input:
             text_input.send_keys(value)
+            self.sleep_for(WAIT_TYPES.UX_RENDER)
             self.send_enter(text_input)
             if multiple:
                 self.send_escape(text_input)
diff --git a/lib/galaxy/tool_util/client/staging.py b/lib/galaxy/tool_util/client/staging.py
index c0591afd68f..dbdfbda8185 100644
--- a/lib/galaxy/tool_util/client/staging.py
+++ b/lib/galaxy/tool_util/client/staging.py
@@ -245,7 +245,9 @@ class StagingInterface(metaclass=abc.ABCMeta):
             else:
                 raise ValueError(f"Unsupported type for upload_target: {type(upload_target)}")
 
-        def create_collection_func(element_identifiers: List[Dict[str, Any]], collection_type: str) -> Dict[str, Any]:
+        def create_collection_func(
+            element_identifiers: List[Dict[str, Any]], collection_type: str, rows: Optional[Dict[str, Any]] = None
+        ) -> Dict[str, Any]:
             payload = {
                 "name": "dataset collection",
                 "instance_type": "history",
@@ -253,6 +255,7 @@ class StagingInterface(metaclass=abc.ABCMeta):
                 "element_identifiers": element_identifiers,
                 "collection_type": collection_type,
                 "fields": None if collection_type != "record" else "auto",
+                "rows": rows,
             }
             return self._post("dataset_collections", payload)
 
diff --git a/lib/galaxy/tool_util/cwl/util.py b/lib/galaxy/tool_util/cwl/util.py
index a57342a8bb1..aae6561c692 100644
--- a/lib/galaxy/tool_util/cwl/util.py
+++ b/lib/galaxy/tool_util/cwl/util.py
@@ -25,6 +25,7 @@ from typing import (
 import yaml
 from typing_extensions import (
     Literal,
+    Protocol,
     TypedDict,
 )
 
@@ -134,11 +135,19 @@ def path_or_uri_to_uri(path_or_uri: str) -> str:
         return path_or_uri
 
 
+class CollectionCreateFunc(Protocol):
+
+    def __call__(
+        self, element_identifiers: List[Dict[str, Any]], collection_type: str, rows: Optional[Dict[str, Any]] = None
+    ) -> Dict[str, Any]:
+        """Create a collection from these identifiers."""
+
+
 def galactic_job_json(
     job: Dict[str, Any],
     test_data_directory: str,
     upload_func: Callable[["UploadTarget"], Dict[str, Any]],
-    collection_create_func: Callable[[List[Dict[str, Any]], str], Dict[str, Any]],
+    collection_create_func: CollectionCreateFunc,
     tool_or_workflow: Literal["tool", "workflow"] = "workflow",
     resolve_data: Optional[Callable[[str], Optional[str]]] = None,
 ) -> Tuple[Dict[str, Any], List[Dict[str, Any]]]:
@@ -348,8 +357,10 @@ def galactic_job_json(
         assert "collection_type" in value
         collection_type = value["collection_type"]
         elements = to_elements(value, collection_type)
-
-        collection = collection_create_func(elements, collection_type)
+        kwds = {}
+        if collection_type.startswith("sample_sheet"):
+            kwds["rows"] = value["rows"]
+        collection = collection_create_func(elements, collection_type, **kwds)
         dataset_collections.append(collection)
         hdca_id = collection["id"]
         return {"src": "hdca", "id": hdca_id}
diff --git a/lib/galaxy/tool_util/parser/parameter_validators.py b/lib/galaxy/tool_util/parser/parameter_validators.py
index 787b2bb3e18..6fabc8ae798 100644
--- a/lib/galaxy/tool_util/parser/parameter_validators.py
+++ b/lib/galaxy/tool_util/parser/parameter_validators.py
@@ -43,13 +43,18 @@ from galaxy.util import (
 )
 
 
+class UnsafeValidatorConfiguredInUntrustedContext(AssertionError):
+    pass
+
+
 def parse_dict_validators(validator_dicts: List[Dict[str, Any]], trusted: bool) -> List[AnyValidatorModel]:
     validator_models = []
     for validator_dict in validator_dicts:
         validator = DiscriminatedAnyValidatorModel.validate_python(validator_dict)
         if not trusted:
             # Don't risk instantiating unsafe validators for user-defined code
-            assert validator._safe
+            if not validator._safe:
+                raise UnsafeValidatorConfiguredInUntrustedContext()
         validator_models.append(validator)
     return validator_models
 
diff --git a/lib/galaxy/tool_util_models/parameter_validators.py b/lib/galaxy/tool_util_models/parameter_validators.py
index 1bf7809dfbd..7a685461f43 100644
--- a/lib/galaxy/tool_util_models/parameter_validators.py
+++ b/lib/galaxy/tool_util_models/parameter_validators.py
@@ -466,8 +466,17 @@ AnyValidatorModel = Annotated[
     Field(discriminator="type"),
 ]
 
+AnySafeValidatorModel = Annotated[
+    Union[
+        RegexParameterValidatorModel,
+        InRangeParameterValidatorModel,
+        LengthParameterValidatorModel,
+    ],
+    Field(discriminator="type"),
+]
 
 DiscriminatedAnyValidatorModel = TypeAdapter(AnyValidatorModel)  # type:ignore[var-annotated]
+DiscriminatedAnySafeValidatorModel = TypeAdapter(AnySafeValidatorModel)  # type:ignore[var-annotated]
 
 
 def raise_error_if_validation_fails(
diff --git a/lib/galaxy/tools/data_fetch.py b/lib/galaxy/tools/data_fetch.py
index 896a28405ab..f8d6e5573b0 100644
--- a/lib/galaxy/tools/data_fetch.py
+++ b/lib/galaxy/tools/data_fetch.py
@@ -133,6 +133,8 @@ def _fetch_target(upload_config: "UploadConfig", target: Dict[str, Any]):
 
     if "collection_type" in target:
         fetched_target["collection_type"] = target["collection_type"]
+    if "column_definitions" in target:
+        fetched_target["column_definitions"] = target["column_definitions"]
     if "name" in target:
         fetched_target["name"] = target["name"]
 
@@ -151,6 +153,9 @@ def _fetch_target(upload_config: "UploadConfig", target: Dict[str, Any]):
             target_metadata["created_from_basename"] = created_from_basename
         if "error_message" in src_item:
             target_metadata["error_message"] = src_item["error_message"]
+        row = src_item.get("row", None)
+        if row:
+            target_metadata["row"] = row
         return target_metadata
 
     def _resolve_item(item):
diff --git a/lib/galaxy/tools/parameters/basic.py b/lib/galaxy/tools/parameters/basic.py
index f4c31732fef..9744710d390 100644
--- a/lib/galaxy/tools/parameters/basic.py
+++ b/lib/galaxy/tools/parameters/basic.py
@@ -2501,6 +2501,8 @@ class DataCollectionToolParameter(BaseDataToolParameter):
         self.tag = tag
         self.multiple = False  # Accessed on DataToolParameter a lot, may want in future
         self.is_dynamic = True
+        self._fields = input_source.get("fields", None)
+        self._column_definitions = input_source.get("column_definitions", None)
         self._parse_options(input_source)  # TODO: Review and test.
         self.default_object = input_source.parse_default()
         if self.optional and self.default_object is not None:
@@ -2613,6 +2615,8 @@ class DataCollectionToolParameter(BaseDataToolParameter):
         other_values = other_values or {}
         d = super().to_dict(trans)
         d["collection_types"] = self.collection_types
+        d["fields"] = self._fields
+        d["column_definitions"] = self._column_definitions
         d["extensions"] = self.extensions
         d["multiple"] = self.multiple
         d["options"] = {"hda": [], "hdca": [], "dce": []}
diff --git a/lib/galaxy/tools/sample_sheet_to_tabular.xml b/lib/galaxy/tools/sample_sheet_to_tabular.xml
new file mode 100644
index 00000000000..b970891b922
--- /dev/null
+++ b/lib/galaxy/tools/sample_sheet_to_tabular.xml
@@ -0,0 +1,42 @@
+<tool id="__SAMPLE_SHEET_TO_TABULAR__"
+      name="Sample sheet to tabular"
+      version="1.0.0">
+  <description></description>
+  <edam_operations>
+    <edam_operation>operation_3359</edam_operation>
+  </edam_operations>
+  <configfiles>
+    <configfile name="out_config">#for $key in $input.keys()#
+#set $row = $input.sample_sheet_row($key)#
+#set $row_as_string = '&#009;'.join(map(lambda x: str($none_replace) if x is None else (str($empty_replace) if x == "" else (str($bool_true_replace) if x is True else (str($bool_false_replace) if x is False else str(x)))), $row))#
+$key&#009;$row_as_string
+#end for#</configfile>
+  </configfiles>
+    <command><![CDATA[
+cp '$out_config' '$output'
+    ]]></command>
+
+  <inputs>
+    <param type="data_collection" collection_type="sample_sheet,sample_sheet:paired,sample_sheet:paired_or_unpaired,sample_sheet:record" name="input" label="Sample sheet to convert" />
+    <param name="none_replace" label="Replace 'null' values with" type="text" value="" help="Default is just an empty string '', but in some cases '-' might read better.">
+    </param>
+    <param name="empty_replace" label="Replace empty string values with" type="text" value="" help="Default is just to keep the empty string '', but in some cases '-' might read better.">
+    </param>
+    <param name="bool_true_replace" label="Replace boolean 'true' values with" type="text" value="TRUE">
+    </param>
+    <param name="bool_false_replace" label="Replace boolean 'false' values with" type="text" value="FALSE">
+    </param>
+  </inputs>
+  <outputs>
+    <data name="output" label="${on_string} (as tabular)" format="tabular"/>
+  </outputs>
+  <help><![CDATA[
+
+========
+Synopsis
+========
+
+Takes a sample sheet dataset collection and converts the sample sheet metadata into a tabular dataset.
+
+  ]]></help>
+</tool>
diff --git a/lib/galaxy/tools/wrappers.py b/lib/galaxy/tools/wrappers.py
index cc4b6289ee9..369e97e0230 100644
--- a/lib/galaxy/tools/wrappers.py
+++ b/lib/galaxy/tools/wrappers.py
@@ -34,6 +34,7 @@ from galaxy.model import (
 )
 from galaxy.model.metadata import FileParameter
 from galaxy.model.none_like import NoneDataset
+from galaxy.schema.schema import SampleSheetRow
 from galaxy.security.object_wrapper import wrap_with_safe_string
 from galaxy.tools.parameters.basic import (
     BooleanToolParameter,
@@ -679,10 +680,13 @@ class DatasetCollectionWrapper(ToolParameterValueWrapper, HasDatasets):
         element_instances: Dict[str, DatasetCollectionElementWrapper] = {}
 
         element_instance_list: List[DatasetCollectionElementWrapper] = []
+        rows: Dict[str, Optional[SampleSheetRow]] = {}
         for dataset_collection_element in elements:
             element_object = dataset_collection_element.element_object
             element_identifier = dataset_collection_element.element_identifier
             assert element_identifier is not None
+            row = dataset_collection_element.columns
+            rows[element_identifier] = row
 
             if isinstance(element_object, DatasetCollection):
                 element_wrapper: DatasetCollectionElementWrapper = DatasetCollectionWrapper(
@@ -696,9 +700,13 @@ class DatasetCollectionWrapper(ToolParameterValueWrapper, HasDatasets):
             element_instances[element_identifier] = element_wrapper
             element_instance_list.append(element_wrapper)
 
+        self.__rows = rows
         self.__element_instances = element_instances
         self.__element_instance_list = element_instance_list
 
+    def sample_sheet_row(self, element_identifier: str) -> Optional[SampleSheetRow]:
+        return self.__rows[element_identifier]
+
     def get_datasets_for_group(self, group: str) -> List[DatasetFilenameWrapper]:
         group = str(group).lower()
         if not self._dataset_elements_cache.get(group):
diff --git a/lib/galaxy/util/rules_dsl.py b/lib/galaxy/util/rules_dsl.py
index 516ece43c94..892d9e0ccea 100644
--- a/lib/galaxy/util/rules_dsl.py
+++ b/lib/galaxy/util/rules_dsl.py
@@ -275,6 +275,29 @@ class AddColumnSubstrRuleDefinition(BaseRuleDefinition):
         return list(map(new_row, data)), sources
 
 
+class AddColumnFromSampleSheetByIndex(BaseRuleDefinition):
+    rule_type = "add_column_from_sample_sheet_index"
+
+    def validate_rule(self, rule):
+        _ensure_rule_contains_keys(
+            rule,
+            {
+                "value": int,
+            },
+        )
+
+    def apply(self, rule, data, sources):
+        sample_sheet_column_index = rule["value"]
+
+        new_rows = []
+        for index, row in enumerate(data):
+            source = sources[index]
+            columns = source["columns"]
+            new_rows.append(row + [columns[sample_sheet_column_index]])
+
+        return new_rows, sources
+
+
 class RemoveColumnsRuleDefinition(BaseRuleDefinition):
     rule_type = "remove_columns"
 
@@ -636,6 +659,7 @@ RULES_DEFINITION_CLASSES: List[Type[BaseRuleDefinition]] = [
     AddColumnRownumRuleDefinition,
     AddColumnValueRuleDefinition,
     AddColumnSubstrRuleDefinition,
+    AddColumnFromSampleSheetByIndex,
     RemoveColumnsRuleDefinition,
     AddFilterRegexRuleDefinition,
     AddFilterCountRuleDefinition,
diff --git a/lib/galaxy/util/rules_dsl_spec.yml b/lib/galaxy/util/rules_dsl_spec.yml
index a0022b36923..b0c8f83c25a 100644
--- a/lib/galaxy/util/rules_dsl_spec.yml
+++ b/lib/galaxy/util/rules_dsl_spec.yml
@@ -506,6 +506,28 @@
   final:
     data: [["moo", "barn"], ["meow", "house"], ["bark", "firestation"]]
 
+- doc: add column from a sample sheet by index
+  rules:
+    - type: add_column_from_sample_sheet_index
+      value: 0
+  initial:
+    data: [["moo"], ["cow"]]
+    sources: [{"columns": [0, 1]}, {"columns": [2, 3]}]
+  final:
+    data: [["moo", 0], ["cow", 2]]
+
+- doc: add multiple columns from a sample sheet by index
+  rules:
+    - type: add_column_from_sample_sheet_index
+      value: 0
+    - type: add_column_from_sample_sheet_index
+      value: 1
+  initial:
+    data: [["moo"], ["cow"]]
+    sources: [{"columns": [0, 1]}, {"columns": [2, 3]}]
+  final:
+    data: [["moo", 0, 1], ["cow", 2, 3]]
+
 - rules:
     - type: invalid_rule_type
   error: true
diff --git a/lib/galaxy/webapps/galaxy/api/dataset_collections.py b/lib/galaxy/webapps/galaxy/api/dataset_collections.py
index c91ed723272..327cbc001bc 100644
--- a/lib/galaxy/webapps/galaxy/api/dataset_collections.py
+++ b/lib/galaxy/webapps/galaxy/api/dataset_collections.py
@@ -8,9 +8,16 @@ from fastapi import (
     Response,
     status,
 )
+from starlette.responses import StreamingResponse
 from typing_extensions import Annotated
 
 from galaxy.managers.context import ProvidesHistoryContext
+from galaxy.model.dataset_collections.types.sample_sheet_workbook import (
+    CreateWorkbookFromBase64,
+    ParsedWorkbook,
+    ParseWorkbook,
+    SampleSheetCollectionType,
+)
 from galaxy.schema.fields import DecodedDatabaseIdField
 from galaxy.schema.schema import (
     AnyHDCA,
@@ -27,11 +34,15 @@ from galaxy.webapps.galaxy.api import (
 from galaxy.webapps.galaxy.api.common import (
     DatasetCollectionElementIdPathParam,
     HistoryHDCAIDPathParam,
+    serve_workbook,
 )
 from galaxy.webapps.galaxy.services.dataset_collections import (
+    CreateWorkbookForCollectionApi,
     DatasetCollectionAttributesResult,
     DatasetCollectionContentElements,
     DatasetCollectionsService,
+    ParsedWorkbookForCollection,
+    ParseWorkbookForCollectionApi,
     SuitableConverters,
     UpdateCollectionAttributePayload,
 )
@@ -51,6 +62,19 @@ ViewTypeQueryParam: str = Query(
     description="The view of collection instance to return.",
 )
 
+Base64ColumnDefinitionsQueryParam: str = Query(
+    ...,
+    description="Base64 encoding of column definitions.",
+)
+Base64PrefixValuesQueryParam: str = Query(
+    None,
+    description="Prefix values for the seeding the workbook, base64 encoded.",
+)
+WorkbookFilenameQueryParam: Optional[str] = Query(
+    None,
+    description="Filename of the workbook download to generate",
+)
+
 
 @router.cbv
 class FastAPIDatasetCollections:
@@ -67,6 +91,68 @@ class FastAPIDatasetCollections:
     ) -> HDCADetailed:
         return self.service.create(trans, payload)
 
+    @router.get(
+        "/api/sample_sheet_workbook/generate",
+        summary="Create an XLSX workbook for a sample sheet definition.",
+        response_class=StreamingResponse,
+        operation_id="dataset_collections__workbook_download",
+    )
+    def create_workbook(
+        self,
+        trans: ProvidesHistoryContext = DependsOnTrans,
+        collection_type: SampleSheetCollectionType = "sample_sheet",
+        column_definitions: str = Base64ColumnDefinitionsQueryParam,
+        prefix_values: Optional[str] = Base64PrefixValuesQueryParam,
+        filename: Optional[str] = WorkbookFilenameQueryParam,
+    ):
+        payload = CreateWorkbookFromBase64(
+            collection_type=collection_type, column_definitions=column_definitions, prefix_values=prefix_values
+        )
+        output = self.service.create_workbook(payload)
+        return serve_workbook(output, filename)
+
+    @router.post(
+        "/api/sample_sheet_workbook/parse",
+        summary="Parse an XLSX workbook for a sample sheet definition and supplied file contents.",
+        operation_id="dataset_collections__workbook_parse",
+    )
+    def parse_workbook(
+        self,
+        trans: ProvidesHistoryContext = DependsOnTrans,
+        payload: ParseWorkbook = Body(...),
+    ) -> ParsedWorkbook:
+        return self.service.parse_workbook(payload)
+
+    @router.get(
+        "/api/dataset_collections/{hdca_id}/sample_sheet_workbook/generate",
+        summary="Create an XLSX workbook for a sample sheet definition targeting an existing collection.",
+        response_class=StreamingResponse,
+        operation_id="dataset_collections__workbook_download_for_collection",
+    )
+    def create_workbook_for_collection(
+        self,
+        hdca_id: HistoryHDCAIDPathParam,
+        trans: ProvidesHistoryContext = DependsOnTrans,
+        column_definitions: str = Base64ColumnDefinitionsQueryParam,
+        filename: Optional[str] = WorkbookFilenameQueryParam,
+    ):
+        payload = CreateWorkbookForCollectionApi(hdca_id=hdca_id, column_definitions=column_definitions)
+        output = self.service.create_workbook_for_collection(trans, payload)
+        return serve_workbook(output, filename)
+
+    @router.post(
+        "/api/dataset_collections/{hdca_id}/sample_sheet_workbook/parse",
+        summary="Parse an XLSX workbook for a sample sheet definition and supplied file contents.",
+        operation_id="dataset_collections__workbook_parse_for_collection",
+    )
+    def parse_workbook_for_collection(
+        self,
+        hdca_id: HistoryHDCAIDPathParam,
+        trans: ProvidesHistoryContext = DependsOnTrans,
+        payload: ParseWorkbookForCollectionApi = Body(...),
+    ) -> ParsedWorkbookForCollection:
+        return self.service.parse_workbook_for_collection(trans, hdca_id, payload)
+
     @router.post(
         "/api/dataset_collections/{hdca_id}/copy",
         summary="Copy the given collection datasets to a new collection using a new `dbkey` attribute.",
diff --git a/lib/galaxy/webapps/galaxy/services/dataset_collections.py b/lib/galaxy/webapps/galaxy/services/dataset_collections.py
index c237d04f84f..5ef2cfa1a46 100644
--- a/lib/galaxy/webapps/galaxy/services/dataset_collections.py
+++ b/lib/galaxy/webapps/galaxy/services/dataset_collections.py
@@ -1,3 +1,5 @@
+from dataclasses import dataclass
+from io import BytesIO
 from logging import getLogger
 from typing import (
     List,
@@ -8,6 +10,7 @@ from typing import (
 )
 
 from pydantic import (
+    BaseModel,
     ConfigDict,
     Field,
     RootModel,
@@ -28,6 +31,27 @@ from galaxy.managers.hdas import HDAManager
 from galaxy.managers.hdcas import HDCAManager
 from galaxy.managers.histories import HistoryManager
 from galaxy.model import DatasetCollectionElement
+from galaxy.model.dataset_collections.types.sample_sheet_util import (
+    SampleSheetColumnDefinitionModel,
+)
+from galaxy.model.dataset_collections.types.sample_sheet_workbook import (
+    ColumnDefinitionsField,
+    CreateWorkbookFromBase64,
+    CreateWorkbookFromBase64ForCollection,
+    DEFAULT_TITLE,
+    generate_workbook_from_base64,
+    generate_workbook_from_base64_for_collection,
+    parse_workbook,
+    parse_workbook_for_collection,
+    ParsedWorkbook,
+    ParseWorkbook,
+    ParseWorkbookForCollection,
+    WorkbookContentField,
+)
+from galaxy.model.dataset_collections.workbook_util import (
+    Base64StringT,
+    workbook_to_bytes,
+)
 from galaxy.schema.fields import (
     DecodedDatabaseIdField,
     ModelClassField,
@@ -92,6 +116,47 @@ class DatasetCollectionContentElements(RootModel):
     root: List[DCESummary]
 
 
+@dataclass
+class CreateWorkbookForCollectionApi:
+    hdca_id: DecodedDatabaseIdField
+    column_definitions: Base64StringT
+    prefix_values: Optional[Base64StringT] = None
+
+
+class ParseWorkbookForCollectionApi(BaseModel):
+    column_definitions: List[SampleSheetColumnDefinitionModel] = ColumnDefinitionsField
+    content: str = WorkbookContentField
+
+    model_config = ConfigDict(extra="forbid")
+
+
+# for next two methods - align vaguely with output of dictify_element_reference in managers/collections_util
+# TODO: replace id: str with EncodedIdField maybe
+class ParsedWorkbookHda(BaseModel):
+    id: str
+    model_class: Literal["HistoryDatasetAssociation"] = "HistoryDatasetAssociation"
+
+
+class ParsedWorkbookCollection(BaseModel):
+    id: str
+    model_class: Literal["DatasetCollection"] = "DatasetCollection"
+
+
+ParsedWorkbookElementObject = Union[ParsedWorkbookHda, ParsedWorkbookCollection]
+
+
+class ParsedWorkbookElement(BaseModel):
+    # align with DCESummary in schema - should we just reuse that?
+    element_index: int
+    element_identifier: str
+    element_type: Literal["hda", "child_collection"]
+    object: ParsedWorkbookElementObject
+
+
+class ParsedWorkbookForCollection(ParsedWorkbook):
+    elements: List[ParsedWorkbookElement]
+
+
 class DatasetCollectionsService(ServiceBase, UsesLibraryMixinItems):
     def __init__(
         self,
@@ -295,3 +360,72 @@ class DatasetCollectionsService(ServiceBase, UsesLibraryMixinItems):
                 f"Serializing DatasetCollectionContentsElements failed. Collection is populated: {hdca.collection.populated}"
             )
             raise
+
+    def create_workbook(self, payload: CreateWorkbookFromBase64) -> BytesIO:
+        workbook = generate_workbook_from_base64(payload)
+        return workbook_to_bytes(workbook)
+
+    def create_workbook_for_collection(
+        self,
+        trans: ProvidesHistoryContext,
+        payload: CreateWorkbookForCollectionApi,
+    ) -> BytesIO:
+        dataset_collection_instance = self.collection_manager.get_dataset_collection_instance(
+            trans, "history", payload.hdca_id
+        )
+        create_object = CreateWorkbookFromBase64ForCollection(
+            title=DEFAULT_TITLE,
+            dataset_collection=dataset_collection_instance.collection,
+            column_definitions=payload.column_definitions,
+        )
+        workbook = generate_workbook_from_base64_for_collection(create_object)
+        return workbook_to_bytes(workbook)
+
+    def parse_workbook(self, payload: ParseWorkbook) -> ParsedWorkbook:
+        return parse_workbook(payload)
+
+    def parse_workbook_for_collection(
+        self, trans: ProvidesHistoryContext, hdca_id: int, payload: ParseWorkbookForCollectionApi
+    ) -> ParsedWorkbookForCollection:
+        dataset_collection_instance = self.collection_manager.get_dataset_collection_instance(trans, "history", hdca_id)
+        dataset_collection = dataset_collection_instance.collection
+        request = ParseWorkbookForCollection(
+            dataset_collection=dataset_collection,
+            column_definitions=payload.column_definitions,
+            content=payload.content,
+        )
+        parsed_workbook: ParsedWorkbook = parse_workbook_for_collection(request)
+        return _attach_elements_to_parsed_workbook(trans, dataset_collection_instance, parsed_workbook)
+
+
+def _attach_elements_to_parsed_workbook(
+    trans: ProvidesHistoryContext,
+    dataset_collection_instance: "HistoryDatasetCollectionAssociation",
+    workbook: ParsedWorkbook,
+) -> ParsedWorkbookForCollection:
+    elements: List[ParsedWorkbookElement] = []
+    for element in dataset_collection_instance.collection.elements:
+        object: ParsedWorkbookElementObject
+        if element.is_collection:
+            child_collection = element.child_collection
+            assert child_collection
+            object = ParsedWorkbookHda(id=trans.security.encode_id(child_collection.id))
+        else:
+            hda = element.hda
+            assert hda
+            object = ParsedWorkbookHda(id=trans.security.encode_id(hda.id))
+
+        elements.append(
+            ParsedWorkbookElement(
+                element_index=element.element_index,
+                element_identifier=element.element_identifier,
+                element_type=element.element_type,
+                object=object,
+            )
+        )
+    return ParsedWorkbookForCollection(
+        rows=workbook.rows,
+        extra_columns=[],
+        elements=elements,
+        parse_log=[],
+    )
diff --git a/lib/galaxy/workflow/modules.py b/lib/galaxy/workflow/modules.py
index 924a4fa3147..0fdc6e55e47 100644
--- a/lib/galaxy/workflow/modules.py
+++ b/lib/galaxy/workflow/modules.py
@@ -1185,8 +1185,13 @@ class InputDataCollectionModule(InputModule):
             tag=tag,
             optional=optional,
         )
+        if "column_definitions" in parameter_def:
+            collection_param_source["column_definitions"] = parameter_def["column_definitions"]
+        if "fields" in parameter_def:
+            collection_param_source["fields"] = parameter_def["fields"]
         if formats := parameter_def.get("format"):
             collection_param_source["format"] = ",".join(listify(formats))
+        # TODO: this needs to land up part of DataCollectionToolParameter
         input_param = DataCollectionToolParameter(None, collection_param_source, self.trans)
         return dict(input=input_param)
 
@@ -1214,13 +1219,17 @@ class InputDataCollectionModule(InputModule):
             collection_type = inputs["collection_type"]
         else:
             collection_type = self.default_collection_type
-        state_as_dict["collection_type"] = collection_type
+        if "column_definitions" in inputs:
+            column_definitions = inputs["column_definitions"]
+        else:
+            column_definitions = None
         if "fields" in inputs:
             fields = inputs["fields"]
         else:
             fields = None
         state_as_dict["collection_type"] = collection_type
         state_as_dict["fields"] = fields
+        state_as_dict["column_definitions"] = column_definitions
         return state_as_dict
 
 
diff --git a/lib/galaxy_test/api/test_dataset_collections.py b/lib/galaxy_test/api/test_dataset_collections.py
index 4501efcbb3e..6f51fbfb378 100644
--- a/lib/galaxy_test/api/test_dataset_collections.py
+++ b/lib/galaxy_test/api/test_dataset_collections.py
@@ -1,11 +1,18 @@
 import json
 import zipfile
 from io import BytesIO
+from pathlib import Path
 from typing import List
 from urllib.parse import quote
 
+from galaxy.schema.schema import SampleSheetColumnDefinitions
+from galaxy.util import galaxy_root_path
 from galaxy.util.unittest_utils import skip_if_github_down
-from galaxy_test.base.api_asserts import assert_object_id_error
+from galaxy_test.base.api_asserts import (
+    assert_has_key,
+    assert_object_id_error,
+    assert_status_code_is,
+)
 from galaxy_test.base.decorators import requires_new_user
 from galaxy_test.base.populators import (
     DatasetCollectionPopulator,
@@ -13,6 +20,32 @@ from galaxy_test.base.populators import (
 )
 from ._framework import ApiTestCase
 
+# copy of unit test definition in test_sample_sheet_workbook.py - maybe just serialize it as JSON?
+TEST_COLUMN_DEFINITIONS_1: SampleSheetColumnDefinitions = [
+    {
+        "name": "replicate number",
+        "type": "int",
+        "description": "The replicate number of this sample.",
+        "default_value": 0,
+        "optional": False,
+    },
+    {
+        "name": "treatment",
+        "type": "string",
+        "restrictions": ["treatment1", "treatment2", "none"],
+        "description": "The treatment code for this sample.",
+        "default_value": "none",
+        "optional": False,
+    },
+    {
+        "name": "is control?",
+        "type": "boolean",
+        "description": "Was this sample a control? If TRUE, please ensure treatment is set to none.",
+        "default_value": True,
+        "optional": False,
+    },
+]
+
 
 class TestDatasetCollectionsApi(ApiTestCase):
     dataset_populator: DatasetPopulator
@@ -220,6 +253,242 @@ class TestDatasetCollectionsApi(ApiTestCase):
             create_response = self._post("dataset_collections", payload)
             self._assert_status_code_is(create_response, 400)
 
+    def test_sample_sheet_column_definition_problems(self, history_id):
+        contents = [
+            ("sample1", "1\t2\t3"),
+            ("sample2", "4\t5\t6"),
+        ]
+        sample_sheet_identifiers = self.dataset_collection_populator.list_identifiers(history_id, contents)
+        payload = dict(
+            name="my cool sample sheet",
+            instance_type="history",
+            history_id=history_id,
+            element_identifiers=sample_sheet_identifiers,
+            collection_type="sample_sheet",
+            column_definitions=[{"type": "int", "name": "replicate", "optional": False}],
+            rows={"sample1": [42], "sample2": [45]},
+        )
+        create_response = self._post("dataset_collections", payload, json=True)
+        self._check_create_response(create_response)
+        payload["column_definitions"] = [{"type": "intx"}]
+        create_response = self._post("dataset_collections", payload, json=True)
+        assert_status_code_is(create_response, 400)
+        payload["column_definitions"] = [{"typex": "int"}]
+        create_response = self._post("dataset_collections", payload, json=True)
+        assert_status_code_is(create_response, 400)
+        payload["column_definitions"] = [{"type": "int", "restrictions": "wrongtype", "name": "replicate"}]
+        create_response = self._post("dataset_collections", payload, json=True)
+        assert_status_code_is(create_response, 400)
+        payload["column_definitions"] = [
+            {"type": "int", "name": "replicate", "validators": [{"type": "expression", "expression": "False"}]}
+        ]
+        create_response = self._post("dataset_collections", payload, json=True)
+        assert_status_code_is(create_response, 400)
+
+    def test_sample_sheet_element_identifier_column_type(self, history_id):
+        contents = [
+            ("sample1", "1\t2\t3"),
+            ("sample2", "4\t5\t6"),
+        ]
+        sample_sheet_identifiers = self.dataset_collection_populator.list_identifiers(history_id, contents)
+        payload = dict(
+            name="my cool sample sheet",
+            instance_type="history",
+            history_id=history_id,
+            element_identifiers=sample_sheet_identifiers,
+            collection_type="sample_sheet",
+            column_definitions=[{"type": "element_identifier", "name": "matched_element", "optional": False}],
+            rows={"sample1": ["sample2"], "sample2": ["sample1"]},
+        )
+        create_response = self._post("dataset_collections", payload, json=True)
+        self._check_create_response(create_response)
+
+        # should not allow collection creation if element identifiers are not matching
+        payload["rows"] = {"sample1": ["noinsamplesheet"], "sample2": ["noinsamplesheet"]}
+        create_response = self._post("dataset_collections", payload, json=True)
+        assert_status_code_is(create_response, 400)
+
+    def test_sample_sheet_of_pairs_creation(self, history_id):
+        contents = [
+            "1\t2\t3",
+            "4\t5\t6",
+        ]
+        pair_identifiers = self.dataset_collection_populator.pair_identifiers(history_id, contents)
+        identifiers = [
+            {
+                "name": "sample1",
+                "collection_type": "paired",
+                "src": "new_collection",
+                "element_identifiers": pair_identifiers,
+            }
+        ]
+        payload = dict(
+            name="my cool sample sheet",
+            instance_type="history",
+            history_id=history_id,
+            element_identifiers=identifiers,
+            collection_type="sample_sheet:paired",
+            column_definitions=[{"type": "int", "name": "replicate", "default_value": 0, "optional": False}],
+            rows={"sample1": [42]},
+        )
+        create_response = self._post("dataset_collections", payload, json=True)
+        print(create_response.json())
+        self._check_create_response(create_response)
+        dataset_collection = create_response.json()
+        assert dataset_collection["collection_type"] == "sample_sheet:paired"
+        assert dataset_collection["name"] == "my cool sample sheet"
+        returned_collections = dataset_collection["elements"]
+        assert len(returned_collections) == 1, dataset_collection
+        sheet_row_0_element = returned_collections[0]
+        self._assert_has_keys(sheet_row_0_element, "element_index", "columns")
+        columns = sheet_row_0_element["columns"]
+        assert len(columns) == 1
+        assert columns[0] == 42
+
+    def test_sample_sheet_validating_against_column_definition(self, history_id):
+        contents = [
+            ("sample1", "1\t2\t3"),
+            ("sample2", "4\t5\t6"),
+        ]
+        sample_sheet_identifiers = self.dataset_collection_populator.list_identifiers(history_id, contents)
+        payload = dict(
+            name="my cool sample sheet",
+            instance_type="history",
+            history_id=history_id,
+            element_identifiers=sample_sheet_identifiers,
+            collection_type="sample_sheet",
+            column_definitions=[{"type": "int", "name": "replicate", "default_value": 0, "optional": False}],
+            rows={"sample1": [42], "sample2": [45]},
+        )
+        create_response = self._post("dataset_collections", payload, json=True)
+        print(create_response.json())
+        self._check_create_response(create_response)
+        # now the datatype of the row data is wrong....
+        payload["column_definitions"] = [
+            {"type": "string", "name": "replicate", "default_value": "", "optional": False}
+        ]
+        create_response = self._post("dataset_collections", payload, json=True)
+        assert_status_code_is(create_response, 400)
+        print(create_response.json())
+
+        # now the row values are too small for the supplied validator
+        payload["column_definitions"] = [
+            {"type": "int", "name": "replicate", "validators": [{"type": "in_range", "min": 60}]}
+        ]
+        create_response = self._post("dataset_collections", payload, json=True)
+        assert_status_code_is(create_response, 400)
+
+    def test_sample_sheet_requires_columns(self, history_id):
+        contents = [
+            ("sample1", "1\t2\t3"),
+            ("sample2", "4\t5\t6"),
+        ]
+        sample_sheet_identifiers = self.dataset_collection_populator.list_identifiers(history_id, contents)
+        payload = dict(
+            name="my cool sample sheet",
+            instance_type="history",
+            history_id=history_id,
+            element_identifiers=sample_sheet_identifiers,
+            collection_type="sample_sheet",
+            column_definitions=[{"type": "int", "name": "replicate", "optional": False}],
+            rows={"sample1": [42], "sample2": [45]},
+        )
+        create_response = self._post("dataset_collections", payload, json=True)
+        dataset_collection = self._check_create_response(create_response)
+
+        self._assert_has_keys(dataset_collection, "collection_type", "column_definitions")
+        column_definitions = dataset_collection["column_definitions"]
+        assert len(column_definitions) == 1
+        self._assert_has_keys(column_definitions[0], "type")
+        assert column_definitions[0]["type"] == "int"
+
+        # TODO: restore assertion and test before merging...
+        # assert something about column definition here....
+        assert dataset_collection["collection_type"] == "sample_sheet"
+        assert dataset_collection["name"] == "my cool sample sheet"
+        returned_collections = dataset_collection["elements"]
+        assert len(returned_collections) == 2, dataset_collection
+        sheet_row_0_element = returned_collections[0]
+        self._assert_has_keys(sheet_row_0_element, "element_index", "columns")
+        record_pos_0_object = sheet_row_0_element["object"]
+        self._assert_has_keys(record_pos_0_object, "name", "history_content_type")
+        row_0 = sheet_row_0_element["columns"]
+        assert row_0[0] == 42
+
+        sheet_row_1_element = returned_collections[1]
+        self._assert_has_keys(sheet_row_1_element, "element_index", "columns")
+        row_1 = sheet_row_1_element["columns"]
+        assert row_1[0] == 45
+        # TODO: test case where column definition does not match supplied data
+
+    def test_workbook_download(self):
+        xlsx_file = self.dataset_collection_populator.download_workbook(
+            "sample_sheet",
+            [
+                {"name": "condition", "type": "string", "default_value": "", "optional": False},
+                {"name": "replicate", "type": "int", "default_value": 0, "optional": False},
+            ],
+        )
+        self._assert_file_looks_like_xlsx(xlsx_file)
+
+    def test_workbook_download_for_collection(self):
+        with self.dataset_populator.test_history(require_new=False) as history_id:
+            hdca_id = self.dataset_collection_populator.create_list_in_history(
+                history_id, contents=[("sample1", "sample1 contents")], wait=True
+            ).json()["outputs"][0]["id"]
+
+            xlsx_file = self.dataset_collection_populator.download_workbook_for_collection(
+                hdca_id,
+                [
+                    {"name": "condition", "type": "string", "default_value": "", "optional": False},
+                    {"name": "replicate", "type": "int", "default_value": 0, "optional": False},
+                ],
+            )
+            self._assert_file_looks_like_xlsx(xlsx_file)
+
+    def _assert_file_looks_like_xlsx(self, xlsx_file: str):
+        # Check the file header
+        with open(xlsx_file, "rb") as file:
+            header = file.read(4)
+            # The ZIP file signature is 0x50 0x4B 0x03 0x04
+            return header == b"\x50\x4b\x03\x04"
+
+    def test_workbook_parse(self):
+        xlsx_path = Path(galaxy_root_path) / "lib" / "galaxy" / "model" / "unittest_utils" / "filled_in_workbook_1.xlsx"
+        example_as_bytes = xlsx_path.read_bytes()
+        response = self.dataset_collection_populator.parse_workbook(
+            example_as_bytes, "sample_sheet", TEST_COLUMN_DEFINITIONS_1
+        )
+        assert_has_key(response, "rows")
+        rows = response["rows"]
+        assert rows[0]["url"] == "https://zenodo.org/records/3263975/files/DRR000770.fastqsanger.gz"
+        assert rows[0]["replicate number"] == 1
+        assert rows[0]["treatment"] == "treatment1"
+        assert rows[0]["is control?"] is False
+        assert rows[1]["replicate number"] == 2
+        assert rows[1]["treatment"] == "treatment1"
+
+    def test_workbook_parse_for_collection(self):
+        with self.dataset_populator.test_history(require_new=False) as history_id:
+            hdca_id = self.dataset_collection_populator.create_list_in_history(
+                history_id, contents=[("sample1", "sample1 contents")], wait=True
+            ).json()["outputs"][0]["id"]
+
+            xlsx_path = (
+                Path(galaxy_root_path)
+                / "lib"
+                / "galaxy"
+                / "model"
+                / "unittest_utils"
+                / "filled_in_workbook_from_collection.xlsx"
+            )
+            example_as_bytes = xlsx_path.read_bytes()
+            response = self.dataset_collection_populator.parse_workflow_for_collection(
+                hdca_id, example_as_bytes, TEST_COLUMN_DEFINITIONS_1
+            )
+            assert_has_key(response, "rows")
+            assert_has_key(response, "elements")
+
     def test_list_download(self):
         with self.dataset_populator.test_history(require_new=False) as history_id:
             fetch_response = self.dataset_collection_populator.create_list_in_history(
@@ -515,6 +784,81 @@ class TestDatasetCollectionsApi(ApiTestCase):
             assert hdca["populated"] is False
             assert "bagit.txt" in hdca["populated_state_message"], hdca
 
+    def test_upload_flat_sample_sheet(self):
+        column_definitions = [{"type": "int", "name": "replicate", "optional": False, "default_value": 0}]
+        with self.dataset_populator.test_history(require_new=False) as history_id:
+            elements = [
+                {
+                    "src": "url",
+                    "url": self.dataset_populator.base64_url_for_string("hello world"),
+                    "info": "my cool hello world",
+                    "name": "sample1",
+                    "row": [42],
+                }
+            ]
+            targets = [
+                {
+                    "destination": {"type": "hdca"},
+                    "elements": elements,
+                    "collection_type": "sample_sheet",
+                    "column_definitions": column_definitions,
+                }
+            ]
+            payload = {
+                "history_id": history_id,
+                "targets": targets,
+            }
+            self.dataset_populator.fetch(payload)
+            hdca = self._assert_one_collection_created_in_history(history_id)
+            assert len(hdca["elements"]) == 1, hdca
+            element0 = hdca["elements"][0]
+            assert element0["element_identifier"] == "sample1"
+            assert element0["columns"][0] == 42
+            object0 = element0["object"]
+            assert object0["state"] == "ok"
+
+    def test_upload_sample_sheet_paired(self):
+        column_definitions = [{"type": "int", "name": "replicate", "optional": False, "default_value": 0}]
+        with self.dataset_populator.test_history(require_new=False) as history_id:
+            elements = [
+                {
+                    "name": "sample1",
+                    "row": [42],
+                    "elements": [
+                        {
+                            "src": "url",
+                            "url": self.dataset_populator.base64_url_for_string("hello world forward"),
+                            "info": "my cool hello world forward",
+                            "name": "forward",
+                        },
+                        {
+                            "src": "url",
+                            "url": self.dataset_populator.base64_url_for_string("hello world reverse"),
+                            "info": "my cool hello world reverse",
+                            "name": "forward",
+                        },
+                    ],
+                }
+            ]
+            targets = [
+                {
+                    "destination": {"type": "hdca"},
+                    "elements": elements,
+                    "collection_type": "sample_sheet:paired",
+                    "column_definitions": column_definitions,
+                }
+            ]
+            payload = {
+                "history_id": history_id,
+                "targets": targets,
+            }
+            self.dataset_populator.fetch(payload)
+            hdca = self._assert_one_collection_created_in_history(history_id)
+            assert len(hdca["elements"]) == 1, hdca
+            element0 = hdca["elements"][0]
+            assert element0["element_identifier"] == "sample1"
+            assert element0["columns"][0] == 42
+
     def _assert_one_collection_created_in_history(self, history_id: str):
         contents_response = self._get(f"histories/{history_id}/contents/dataset_collections")
         self._assert_status_code_is(contents_response, 200)
diff --git a/lib/galaxy_test/api/test_tools.py b/lib/galaxy_test/api/test_tools.py
index 64d0d4326c9..332bb3822ba 100644
--- a/lib/galaxy_test/api/test_tools.py
+++ b/lib/galaxy_test/api/test_tools.py
@@ -958,6 +958,12 @@ class TestToolsApi(ApiTestCase, TestsTools):
     def test_apply_rules_flatten_with_indices(self):
         self._apply_rules_and_check(rules_test_data.EXAMPLE_FLATTEN_USING_INDICES)
 
+    def test_apply_rules_nested_list_from_sample_sheet(self):
+        self._apply_rules_and_check(rules_test_data.EXAMPLE_SAMPLE_SHEET_SIMPLE_TO_NESTED_LIST)
+
+    def test_apply_rules_nested_list_of_pairs_from_sample_sheet(self):
+        self._apply_rules_and_check(rules_test_data.EXAMPLE_SAMPLE_SHEET_SIMPLE_TO_NESTED_LIST_OF_PAIRS)
+
     @skip_without_tool("galaxy_json_sleep")
     def test_dataset_hidden_after_job_finish(self):
         with self.dataset_populator.test_history() as history_id:
diff --git a/lib/galaxy_test/base/populators.py b/lib/galaxy_test/base/populators.py
index c6d6f178e00..f59e5ac5466 100644
--- a/lib/galaxy_test/base/populators.py
+++ b/lib/galaxy_test/base/populators.py
@@ -90,6 +90,7 @@ from typing_extensions import (
 from galaxy.schema.schema import (
     CreateToolLandingRequestPayload,
     CreateWorkflowLandingRequestPayload,
+    SampleSheetColumnDefinitions,
     ToolLandingRequest,
     WorkflowLandingRequest,
 )
@@ -3136,6 +3137,58 @@ class BaseDatasetCollectionPopulator:
             history_id=history_id, collection=pairs, collection_type="list:paired", name=name
         )
 
+    def download_workbook(self, collection_type: str, column_definitions: SampleSheetColumnDefinitions) -> str:
+        url = "sample_sheet_workbook/generate"
+        column_definitions_bytes = json.dumps(column_definitions).encode("utf-8")
+        column_definitions_b64 = base64.b64encode(column_definitions_bytes).decode("utf-8")
+        query_params = {
+            "collection_type": collection_type,
+            "column_definitions": column_definitions_b64,
+            "filename": "workbook.xlsx",
+        }
+        download_response = self.dataset_populator._get(url, query_params)
+        api_asserts.assert_status_code_is_ok(download_response)
+        return self.dataset_populator._get_response_to_tempfile(download_response)
+
+    def download_workbook_for_collection(self, hdca_id: str, column_definitions: SampleSheetColumnDefinitions) -> str:
+        url = f"dataset_collections/{hdca_id}/sample_sheet_workbook/generate"
+        column_definitions_bytes = json.dumps(column_definitions).encode("utf-8")
+        column_definitions_b64 = base64.b64encode(column_definitions_bytes).decode("utf-8")
+        query_params = {
+            "column_definitions": column_definitions_b64,
+            "filename": "workbook.xlsx",
+        }
+        download_response = self.dataset_populator._get(url, query_params)
+        api_asserts.assert_status_code_is_ok(download_response)
+        return self.dataset_populator._get_response_to_tempfile(download_response)
+
+    def parse_workbook(
+        self, xlsx_content: bytes, collection_type: str, column_definitions: SampleSheetColumnDefinitions
+    ):
+        url = "sample_sheet_workbook/parse"
+        content_base64 = base64.b64encode(xlsx_content).decode("utf-8")
+        payload = dict(
+            collection_type=collection_type,
+            column_definitions=column_definitions,
+            content=content_base64,
+        )
+        parse_response = self.dataset_populator._post(url, data=payload, json=True)
+        api_asserts.assert_status_code_is_ok(parse_response)
+        return parse_response.json()
+
+    def parse_workflow_for_collection(
+        self, hdca_id: str, xlsx_content: bytes, column_definitions: SampleSheetColumnDefinitions
+    ):
+        url = f"dataset_collections/{hdca_id}/sample_sheet_workbook/parse"
+        content_base64 = base64.b64encode(xlsx_content).decode("utf-8")
+        payload = dict(
+            column_definitions=column_definitions,
+            content=content_base64,
+        )
+        parse_response = self.dataset_populator._post(url, data=payload, json=True)
+        api_asserts.assert_status_code_is_ok(parse_response)
+        return parse_response.json()
+
     def nested_collection_identifiers(self, history_id: str, collection_type):
         rank_types = list(reversed(collection_type.split(":")))
         assert len(rank_types) > 0
diff --git a/lib/galaxy_test/base/rules_test_data.py b/lib/galaxy_test/base/rules_test_data.py
index 5f2c445980a..eceb258f385 100644
--- a/lib/galaxy_test/base/rules_test_data.py
+++ b/lib/galaxy_test/base/rules_test_data.py
@@ -474,7 +474,7 @@ EXAMPLE_FLATTEN_PAIRED_OR_UNPAIRED = {
             {
                 "type": "list_identifiers",
                 "columns": [2],
-            },
+            }
         ],
     },
     "test_data": {
@@ -498,3 +498,139 @@ EXAMPLE_FLATTEN_PAIRED_OR_UNPAIRED = {
     "check": check_example_flatten_paired_or_unpaired,
     "output_hid": 8,
 }
+
+
+def check_example_sample_sheet_simple_to_nested_list(hdca, dataset_populator):
+    assert hdca["collection_type"] == "list:list"
+    assert hdca["element_count"] == 2
+    treat1_el = hdca["elements"][0]
+    assert "object" in treat1_el, hdca
+    assert "element_identifier" in treat1_el
+    assert treat1_el["element_identifier"] == "treat1", hdca
+
+    treat2_el = hdca["elements"][1]
+    assert "object" in treat2_el, hdca
+    assert "element_identifier" in treat2_el
+    assert treat2_el["element_identifier"] == "treat2", hdca
+
+
+EXAMPLE_SAMPLE_SHEET_SIMPLE_TO_NESTED_LIST = {
+    "rules": {
+        "rules": [
+            {
+                "type": "add_column_from_sample_sheet_index",
+                "value": 0,
+            },
+            {
+                "type": "add_column_metadata",
+                "value": "identifier0",
+            },
+        ],
+        "mapping": [
+            {
+                "type": "list_identifiers",
+                "columns": [0, 1],
+            },
+        ],
+    },
+    "test_data": {
+        "type": "sample_sheet",
+        "elements": [
+            {"identifier": "i1", "contents": "0", "class": "File"},
+            {"identifier": "i2", "contents": "1", "class": "File"},
+            {"identifier": "i3", "contents": "2", "class": "File"},
+        ],
+        "rows": {
+            "i1": ["treat1"],
+            "i2": ["treat2"],
+            "i3": ["treat1"],
+        },
+    },
+    "check": check_example_sample_sheet_simple_to_nested_list,
+    "output_hid": 8,
+}
+
+
+def check_example_sample_sheet_simple_to_nested_list_of_pairs(hdca, dataset_populator):
+    assert hdca["collection_type"] == "list:list:paired"
+    assert hdca["element_count"] == 2
+    treat1_el = hdca["elements"][0]
+    assert "object" in treat1_el, hdca
+    assert "element_identifier" in treat1_el
+    assert treat1_el["element_identifier"] == "treat1", hdca
+
+    treat1list = treat1_el["object"]
+    assert "elements" in treat1list, hdca
+    assert len(treat1list["elements"]) == 2, hdca
+
+    treat2_el = hdca["elements"][1]
+    assert "object" in treat2_el, hdca
+    assert "element_identifier" in treat2_el
+    assert treat2_el["element_identifier"] == "treat2", hdca
+
+    treat2list = treat2_el["object"]
+    assert "elements" in treat2list, hdca
+    assert len(treat2list["elements"]) == 1, hdca
+
+
+EXAMPLE_SAMPLE_SHEET_SIMPLE_TO_NESTED_LIST_OF_PAIRS = {
+    "rules": {
+        "rules": [
+            {
+                "type": "add_column_from_sample_sheet_index",
+                "value": 0,
+            },
+            {
+                "type": "add_column_metadata",
+                "value": "identifier0",
+            },
+            {
+                "type": "add_column_metadata",
+                "value": "identifier1",
+            },
+        ],
+        "mapping": [
+            {
+                "type": "list_identifiers",
+                "columns": [0, 1],
+            },
+            {
+                "type": "paired_identifier",
+                "columns": [2],
+            },
+        ],
+    },
+    "test_data": {
+        "type": "sample_sheet:paired",
+        "elements": [
+            {
+                "identifier": "i1",
+                "elements": [
+                    {"identifier": "forward", "class": "File", "contents": "i1forwardcontents"},
+                    {"identifier": "reverse", "class": "File", "contents": "i1reversecontents"},
+                ],
+            },
+            {
+                "identifier": "i2",
+                "elements": [
+                    {"identifier": "forward", "class": "File", "contents": "i2forwardcontents"},
+                    {"identifier": "reverse", "class": "File", "contents": "i2reversecontents"},
+                ],
+            },
+            {
+                "identifier": "i3",
+                "elements": [
+                    {"identifier": "forward", "class": "File", "contents": "i3forwardcontents"},
+                    {"identifier": "reverse", "class": "File", "contents": "i3reversecontents"},
+                ],
+            },
+        ],
+        "rows": {
+            "i1": ["treat1"],
+            "i2": ["treat2"],
+            "i3": ["treat1"],
+        },
+    },
+    "check": check_example_sample_sheet_simple_to_nested_list_of_pairs,
+    "output_hid": 14,
+}
diff --git a/lib/galaxy_test/selenium/test_workflow_editor.py b/lib/galaxy_test/selenium/test_workflow_editor.py
index f9c65c4ef69..e888918fd9b 100644
--- a/lib/galaxy_test/selenium/test_workflow_editor.py
+++ b/lib/galaxy_test/selenium/test_workflow_editor.py
@@ -7,8 +7,8 @@ from selenium.webdriver.common.action_chains import ActionChains
 from selenium.webdriver.common.by import By
 from selenium.webdriver.common.keys import Keys
 from selenium.webdriver.remote.webelement import WebElement
-from seletools.actions import drag_and_drop
 
+from galaxy.selenium.navigates_galaxy import ColumnDefinition
 from galaxy_test.base.workflow_fixtures import (
     WORKFLOW_NESTED_SIMPLE,
     WORKFLOW_OPTIONAL_TRUE_INPUT_COLLECTION,
@@ -28,6 +28,27 @@ from .framework import (
     SeleniumTestCase,
 )
 
+CHIPSEQ_COLUMNS = [
+    ColumnDefinition(
+        "Condition",
+        "The column is used to specify the specific experimental condition that each sample represents. There is no formal restriction on this column, but values should be kept short for readable reports.",
+        "Text",
+    ),
+    ColumnDefinition(
+        "Replicate",
+        "This column is used to specify a replicate number for the experiment.",
+        "Integer",
+        optional=True,
+        default_value="",
+    ),
+    ColumnDefinition(
+        "Control",
+        "If set, this should reference the element identifier corresponding to the control for this sample.",
+        "Element Identifier",
+        optional=True,
+    ),
+]
+
 
 class TestWorkflowEditor(SeleniumTestCase, RunsWorkflows):
     ensure_registered = True
@@ -250,6 +271,45 @@ class TestWorkflowEditor(SeleniumTestCase, RunsWorkflows):
         self.sleep_for(self.wait_types.UX_RENDER)
         self.screenshot("workflow_editor_data_collection_input_deleted")
 
+    @selenium_test
+    def test_collection_input_sample_sheet_chipseq_example(self):
+        editor = self.components.workflow_editor
+
+        self.workflow_create_new()
+        self.workflow_editor_add_input(item_name="data_collection_input")
+        self.screenshot("workflow_editor_data_collection_sample_sheet_input_new")
+        editor.label_input.wait_for_and_send_keys("input1")
+        editor.annotation_input.wait_for_and_send_keys("chipseq example input")
+        self.sleep_for(self.wait_types.UX_RENDER)
+        editor.collection_type_input.wait_for_and_clear_and_send_keys("sample_sheet:paired")
+
+        self.workflow_editor_enter_column_definitions(CHIPSEQ_COLUMNS)
+
+        self.screenshot("workflow_editor_data_collection_sample_sheet_input_filled_in")
+        self.workflow_editor_click_save()
+
+        workflow = self._download_current_workflow()
+        tool_state = json.loads(workflow["steps"]["0"]["tool_state"])
+        assert tool_state["collection_type"] == "sample_sheet:paired"
+        column_definitions = tool_state["column_definitions"]
+        assert len(column_definitions) == len(CHIPSEQ_COLUMNS)
+        condition = column_definitions[0]
+        assert condition["name"] == "Condition"
+        assert condition["description"] == CHIPSEQ_COLUMNS[0].description
+        assert condition["type"] == "string"
+        assert condition["optional"] is False
+
+        replicate = column_definitions[1]
+        assert replicate["name"] == "Replicate"
+        assert replicate["type"] == "int"
+        assert replicate["optional"] is True
+        assert replicate["default_value"] is None
+
+        control = column_definitions[2]
+        assert control["name"] == "Control"
+        assert control["type"] == "element_identifier"
+        assert control["optional"] is True
+
     @selenium_test
     def test_data_column_input_editing(self):
         self.open_in_workflow_editor(
@@ -956,9 +1016,14 @@ steps:
         self.workflow_editor_add_steps(steps_to_insert)
         self.assert_connected("input1#output", "first_cat#input1")
         self.assert_workflow_has_changes_and_save()
+        workflow = self._download_current_workflow()
+        assert len(workflow["steps"]) == 3
+
+    def _download_current_workflow(self):
+        self.sleep_for(self.wait_types.DATABASE_OPERATION)
         workflow_id = self.driver.current_url.split("id=")[1]
         workflow = self.workflow_populator.download_workflow(workflow_id)
-        assert len(workflow["steps"]) == 3
+        return workflow
 
     @selenium_test
     def test_editor_create_conditional_step(self):
@@ -1558,19 +1623,6 @@ steps:
 
         self.sleep_for(self.wait_types.UX_RENDER)
 
-    def workflow_editor_connect(self, source, sink, screenshot_partial=None):
-        source_id, sink_id = self.workflow_editor_source_sink_terminal_ids(source, sink)
-        source_element = self.find_element_by_selector(f"#{source_id}")
-        sink_element = self.find_element_by_selector(f"#{sink_id}")
-        ac = self.action_chains()
-        ac = ac.move_to_element(source_element).click_and_hold()
-        if screenshot_partial:
-            ac = ac.move_by_offset(10, 10)
-            ac.perform()
-            self.sleep_for(self.wait_types.UX_RENDER)
-            self.screenshot(screenshot_partial)
-        drag_and_drop(self.driver, source_element, sink_element)
-
     def assert_connected(self, source, sink):
         source_id, sink_id = self.workflow_editor_source_sink_terminal_ids(source, sink)
         self.components.workflow_editor.connector_for(source_id=source_id, sink_id=sink_id).wait_for_visible()
@@ -1592,29 +1644,6 @@ steps:
             self.sleep_for(self.wait_types.UX_RENDER)
         return name
 
-    def workflow_editor_source_sink_terminal_ids(self, source, sink):
-        editor = self.components.workflow_editor
-
-        source_node_label, source_output = source.split("#", 1)
-        sink_node_label, sink_input = sink.split("#", 1)
-
-        source_node = editor.node._(label=source_node_label)
-        sink_node = editor.node._(label=sink_node_label)
-
-        source_node.wait_for_present()
-        sink_node.wait_for_present()
-
-        output_terminal = source_node.output_terminal(name=source_output)
-        input_terminal = sink_node.input_terminal(name=sink_input)
-
-        output_element = output_terminal.wait_for_present()
-        input_element = input_terminal.wait_for_present()
-
-        source_id = output_element.get_attribute("id").replace("|", r"\|")
-        sink_id = input_element.get_attribute("id").replace("|", r"\|")
-
-        return source_id, sink_id
-
     def workflow_editor_destroy_connection(self, sink):
         editor = self.components.workflow_editor
 
@@ -1638,11 +1667,6 @@ steps:
         sink_mapping_icon = sink_node.input_mapping_icon(name=sink_input_name)
         sink_mapping_icon.wait_for_absent_or_hidden()
 
-    def workflow_index_open_with_name(self, name):
-        self.workflow_index_open()
-        self.workflow_index_search_for(name)
-        self.components.workflows.edit_button.wait_for_and_click()
-
     @retry_assertion_during_transitions
     def assert_wf_name_is(self, expected_name):
         edit_name_element = self.components.workflow_editor.edit_name.wait_for_visible()
diff --git a/lib/galaxy_test/selenium/test_workflow_run.py b/lib/galaxy_test/selenium/test_workflow_run.py
index f6e8211c264..0f57cda4a78 100644
--- a/lib/galaxy_test/selenium/test_workflow_run.py
+++ b/lib/galaxy_test/selenium/test_workflow_run.py
@@ -3,6 +3,7 @@ from uuid import uuid4
 
 import yaml
 from selenium.webdriver.common.by import By
+from selenium.webdriver.common.keys import Keys
 from typing_extensions import Literal
 
 from galaxy_test.base import rules_test_data
@@ -31,6 +32,7 @@ from .framework import (
     SeleniumTestCase,
     UsesHistoryItemAssertions,
 )
+from .test_workflow_editor import CHIPSEQ_COLUMNS
 
 
 class TestWorkflowRun(SeleniumTestCase, UsesHistoryItemAssertions, RunsWorkflows):
@@ -115,6 +117,244 @@ class TestWorkflowRun(SeleniumTestCase, UsesHistoryItemAssertions, RunsWorkflows
         self.assert_item_summary_includes(2, "2 sequences")
         self.screenshot("workflow_run_simple_complete")
 
+    def _setup_chipseq_input_workflow(self):
+        editor = self.components.workflow_editor
+
+        name = self.workflow_create_new()
+        self.workflow_editor_add_input(item_name="data_collection_input")
+        editor.label_input.wait_for_and_send_keys("input1")
+        editor.annotation_input.wait_for_and_send_keys("chipseq example input")
+        self.sleep_for(self.wait_types.UX_RENDER)
+        editor.collection_type_input.wait_for_and_clear_and_send_keys("sample_sheet:paired")
+        self.workflow_editor_enter_column_definitions(CHIPSEQ_COLUMNS)
+
+        self.tool_open("__SAMPLE_SHEET_TO_TABULAR__")
+        self.sleep_for(self.wait_types.UX_RENDER)
+        editor.label_input.wait_for_and_send_keys("as_table")
+        self.components.workflow_editor.tool_bar.auto_layout.wait_for_and_click()
+        self.sleep_for(self.wait_types.UX_RENDER)
+        self.workflow_editor_connect("input1#output", "as_table#input")
+
+        self.workflow_editor_click_save()
+        return name
+
+    def _chipseq_data_entry(self, element_identifier_mutable: bool = False) -> None:
+        workflow_run = self.components.workflow_run
+        sample_sheet = workflow_run.input.sample_sheet
+
+        sample_sheet.grid_cell_input(row_index=0, column_name="Condition").assert_absent()
+        sample_sheet.grid_cell(row_index=0, column_name="Condition").wait_for_and_double_click()
+        sample_sheet.grid_cell_input(row_index=0, column_name="Condition").wait_for_visible()
+        action_chains = self.action_chains()
+
+        def tab_if_element_identifier_mutable():
+            if element_identifier_mutable:
+                return action_chains.send_keys(Keys.TAB)
+
+        # 0: row for SRR5680995
+        action_chains.send_keys("input")
+        action_chains.send_keys(Keys.TAB)
+        # no replicate here...
+        action_chains.send_keys(Keys.TAB)
+        # no control here...
+        action_chains.send_keys(Keys.TAB)
+
+        # 1: row for SRR5680996
+        tab_if_element_identifier_mutable()
+        action_chains.send_keys("H3K4me3")
+        action_chains.send_keys(Keys.TAB)
+        action_chains.send_keys("1")
+        action_chains.send_keys(Keys.TAB)
+        # action_chains.send_keys("SRR5680995")
+        action_chains.send_keys(Keys.TAB)
+
+        # 2: row for SRR5680997
+        # identifier correct...
+        tab_if_element_identifier_mutable()
+        action_chains.send_keys("H3K27me3")
+        action_chains.send_keys(Keys.TAB)
+        action_chains.send_keys("1")
+        action_chains.send_keys(Keys.TAB)
+        # action_chains.send_keys("SRR5680995")
+        action_chains.send_keys(Keys.TAB)
+
+        # 3: row for SRR5681007
+        # identifier correct...
+        tab_if_element_identifier_mutable()
+        action_chains.send_keys("H3K27me3")
+        action_chains.send_keys(Keys.TAB)
+        action_chains.send_keys("2")
+        action_chains.send_keys(Keys.TAB)
+        # action_chains.send_keys("SRR5681005")
+        action_chains.send_keys(Keys.TAB)
+
+        # 4: row for SRR5681006
+        # identifier correct...
+        tab_if_element_identifier_mutable()
+        action_chains.send_keys("H3K4me3")
+        action_chains.send_keys(Keys.TAB)
+        action_chains.send_keys("2")
+        action_chains.send_keys(Keys.TAB)
+        # action_chains.send_keys("SRR5681005")
+        action_chains.send_keys(Keys.TAB)
+
+        # 5: row for SRR5680998
+        # identifier correct...
+        tab_if_element_identifier_mutable()
+        action_chains.send_keys("CTCF")
+        action_chains.send_keys(Keys.TAB)
+        action_chains.send_keys("1")
+        action_chains.send_keys(Keys.TAB)
+        # action_chains.send_keys("SRR5680995")
+        action_chains.send_keys(Keys.TAB)
+
+        # 6: row for SRR5681008
+        # identifier correct...
+        tab_if_element_identifier_mutable()
+        action_chains.send_keys("CTCF")
+        action_chains.send_keys(Keys.TAB)
+        action_chains.send_keys("2")
+        action_chains.send_keys(Keys.TAB)
+        # action_chains.send_keys("SRR5681005")
+        action_chains.send_keys(Keys.TAB)
+
+        # 7: row for SRR5681005
+        # identifier correct...
+        tab_if_element_identifier_mutable()
+        action_chains.send_keys("input")
+        action_chains.send_keys(Keys.TAB)
+
+        action_chains.click()
+        action_chains.perform()
+
+        controls = {
+            1: "SRR5680995",
+            2: "SRR5680995",
+            3: "SRR5681005",
+            4: "SRR5681005",
+            5: "SRR5680995",
+            6: "SRR5681005",
+        }
+
+        for row_index, control in controls.items():
+            sample_sheet.grid_cell(row_index=row_index, column_name="Control").wait_for_and_double_click()
+            sample_sheet.select_picker.wait_for_and_click()
+            sample_sheet.select_item(item=control).wait_for_and_click()
+
+    @selenium_test
+    @managed_history
+    def test_collection_input_sample_sheet_chipseq_example_from_uris(self):
+        history_id = self.current_history_id()
+
+        name = self._setup_chipseq_input_workflow()
+        self.workflow_run_with_name(name)
+
+        workflow_run = self.components.workflow_run
+        input = workflow_run.input._(label="input1")
+        input.upload.wait_for_and_click()
+
+        sample_sheet = workflow_run.input.sample_sheet
+        sample_sheet._.wait_for_present()
+        self.screenshot("workflow_run_sample_sheet_chipseq_source")
+        sample_sheet.data_import_source_from(source="pasted_table").wait_for_and_click()
+        sample_sheet.wizard_next_button.wait_for_and_click()
+        base_url = self.dataset_populator.base64_url_for_bytes(b"hello world")
+        urls = [
+            f"{base_url}/SRR5680995_R1.fastq.gz",
+            f"{base_url}/SRR5680995_R2.fastq.gz",
+            f"{base_url}/SRR5680996_R1.fastq.gz",
+            f"{base_url}/SRR5680996_R2.fastq.gz",
+            f"{base_url}/SRR5680997_R1.fastq.gz",
+            f"{base_url}/SRR5680997_R2.fastq.gz",
+            f"{base_url}/SRR5681007_R1.fastq.gz",
+            f"{base_url}/SRR5681007_R2.fastq.gz",
+            f"{base_url}/SRR5681006_R1.fastq.gz",
+            f"{base_url}/SRR5681006_R2.fastq.gz",
+            f"{base_url}/SRR5680998_R1.fastq.gz",
+            f"{base_url}/SRR5680998_R2.fastq.gz",
+            f"{base_url}/SRR5681008_R1.fastq.gz",
+            f"{base_url}/SRR5681008_R2.fastq.gz",
+            f"{base_url}/SRR5681005_R1.fastq.gz",
+            f"{base_url}/SRR5681005_R2.fastq.gz",
+        ]
+        pasted_data = "\n".join(urls)
+        sample_sheet.paste_table_textarea.wait_for_and_send_keys(pasted_data)
+        self.screenshot("workflow_run_sample_sheet_chipseq_pasted_data")
+        sample_sheet.wizard_next_button.wait_for_and_click()
+
+        # TODO: remove this line before merge
+        # self.sleep_for(self.wait_types.UX_TRANSITION)
+        # self.screenshot("workflow_run_sample_sheet_chipseq_auto_paired")
+        # sample_sheet.wizard_next_button.wait_for_and_click()
+
+        # TODO: remove this line before merge
+        self.screenshot("workflow_run_sample_sheet_chipseq_table_empty")
+        self._chipseq_data_entry(element_identifier_mutable=True)
+        self.screenshot("workflow_run_sample_sheet_chipseq_table_full")
+        self.sleep_for(self.wait_types.UX_RENDER)
+
+        sample_sheet.wizard_next_button.wait_for_and_click()
+
+        self.history_panel_wait_for_hid_ok(1)
+        self.screenshot("workflow_run_sample_sheet_chipseq_sheet_created")
+        sample_sheet.collection_created_message.wait_for_present()
+        self.workflow_run_submit()
+
+        self.history_panel_wait_for_hid_ok(18)
+        self.dataset_populator.get_history_dataset_content(history_id, hid=18)
+        # TODO: check content...
+
+    @selenium_test
+    @managed_history
+    def test_collection_input_sample_sheet_chipseq_example_from_list_pairs(self):
+        base_url = self.dataset_populator.base64_url_for_bytes(b"hello world")
+        urls = [
+            f"{base_url}/SRR5680995_R1.fastq.gz",
+            f"{base_url}/SRR5680995_R2.fastq.gz",
+            f"{base_url}/SRR5680996_R1.fastq.gz",
+            f"{base_url}/SRR5680996_R2.fastq.gz",
+            f"{base_url}/SRR5680997_R1.fastq.gz",
+            f"{base_url}/SRR5680997_R2.fastq.gz",
+            f"{base_url}/SRR5681007_R1.fastq.gz",
+            f"{base_url}/SRR5681007_R2.fastq.gz",
+            f"{base_url}/SRR5681006_R1.fastq.gz",
+            f"{base_url}/SRR5681006_R2.fastq.gz",
+            f"{base_url}/SRR5680998_R1.fastq.gz",
+            f"{base_url}/SRR5680998_R2.fastq.gz",
+            f"{base_url}/SRR5681008_R1.fastq.gz",
+            f"{base_url}/SRR5681008_R2.fastq.gz",
+            f"{base_url}/SRR5681005_R1.fastq.gz",
+            f"{base_url}/SRR5681005_R2.fastq.gz",
+        ]
+        pasted_data = "\n".join(urls)
+        self.perform_upload_of_pasted_content(pasted_data)
+        self.history_panel_wait_for_and_select([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16])
+        self.history_panel_build_list_of_pairs()
+        self.collection_builder_set_name("inputaslist")
+        self.collection_builder_create()
+        self.history_panel_wait_for_hid_visible(33)
+        name = self._setup_chipseq_input_workflow()
+        self.workflow_run_with_name(name)
+
+        workflow_run = self.components.workflow_run
+        input = workflow_run.input._(label="input1")
+        input.upload.wait_for_and_click()
+
+        sample_sheet = workflow_run.input.sample_sheet
+        sample_sheet._.wait_for_present()
+        sample_sheet.data_import_source_from(source="collection").wait_for_and_click()
+        sample_sheet.wizard_next_button.wait_for_and_click()
+        self.screenshot("workflow_run_sample_sheet_from_collection")
+        sample_sheet.select_collection.wait_for_and_click()
+        collection_id = self.hid_to_history_item(33)["id"]
+        sample_sheet.collection_selection(id=collection_id).wait_for_present()
+        self.screenshot("workflow_run_sample_sheet_from_collection_select_collection")
+        sample_sheet.collection_selection(id=collection_id).wait_for_and_click()
+        # sample_sheet.wizard_next_button.wait_for_and_click()
+        self.screenshot("workflow_run_sample_sheet_from_collection_grid")
+        self._chipseq_data_entry(element_identifier_mutable=False)
+        self.screenshot("workflow_run_sample_sheet_from_collection_grid_full")
+
     @selenium_test
     @managed_history
     def test_runtime_parameters_simple(self):
diff --git a/packages/navigation/setup.cfg b/packages/navigation/setup.cfg
index 986c65d6f97..aa712a7a752 100644
--- a/packages/navigation/setup.cfg
+++ b/packages/navigation/setup.cfg
@@ -34,6 +34,7 @@ include_package_data = True
 install_requires =
     galaxy-util
     PyYAML
+    seletools
 packages = find:
 python_requires = >=3.9
 
diff --git a/test/functional/tools/sample_tool_conf.xml b/test/functional/tools/sample_tool_conf.xml
index 96b4e69b9d2..aef368729db 100644
--- a/test/functional/tools/sample_tool_conf.xml
+++ b/test/functional/tools/sample_tool_conf.xml
@@ -332,6 +332,7 @@
   <tool file="${model_tools_path}/apply_rules.xml" />
   <tool file="${model_tools_path}/build_list.xml" />
   <tool file="${model_tools_path}/build_list_1.2.0.xml" />
+  <tool file="${model_tools_path}/sample_sheet_to_tabular.xml" />
   <tool file="${model_tools_path}/extract_dataset.xml" />
   <tool file="${model_tools_path}/duplicate_file_to_collection.xml" />
   <tool file="${model_tools_path}/split_paired_and_unpaired.xml" />
diff --git a/test/unit/data/dataset_collections/test_sample_sheet_util.py b/test/unit/data/dataset_collections/test_sample_sheet_util.py
new file mode 100644
index 00000000000..92030e5be71
--- /dev/null
+++ b/test/unit/data/dataset_collections/test_sample_sheet_util.py
@@ -0,0 +1,205 @@
+from typing import Any
+
+import pytest
+
+from galaxy.exceptions import RequestParameterInvalidException
+from galaxy.model.dataset_collections.types.sample_sheet_util import (
+    validate_column_definitions as real_validate_column_definitions,
+    validate_row as real_validate_row,
+)
+
+ALL_ELEMENT_IDENTIFIERS = ["sample1", "sample2", "sample3", "sample4", "sample5"]
+
+
+def validate_row(row: Any, column_definitions: Any):
+    # for testing allow various incompatible data structures to be sent in to assure
+    # they fail properly.
+    real_validate_row(row, column_definitions, ALL_ELEMENT_IDENTIFIERS)
+
+
+def validate_column_definitions(column_definitions: Any):
+    # for testing allow various incompatible data structures to be sent in to assure
+    # they fail properly.
+    real_validate_column_definitions(column_definitions)
+
+
+def test_sample_sheet_validation_skipped_on_empty_definitions():
+    validate_row([0, 1], None)  # just ensure no exception is thrown
+
+
+def test_sample_sheet_validation_number_columns():
+    with pytest.raises(RequestParameterInvalidException):
+        validate_row([0, 1], [{"type": "int", "name": "replicate number", "default_value": 0, "optional": False}])
+
+
+def test_sample_sheet_validation_int_type():
+    validate_row([1], [{"type": "int", "name": "replicate number", "default_value": 0, "optional": False}])
+
+    with pytest.raises(RequestParameterInvalidException):
+        validate_row(["sample1"], [{"type": "int", "name": "replicate number", "default_value": 0, "optional": False}])
+
+
+def test_sample_sheet_validation_float_type():
+    validate_row([1.0], [{"type": "float", "name": "seconds", "optional": False}])
+
+    with pytest.raises(RequestParameterInvalidException):
+        validate_row(["sample1"], [{"type": "float", "name": "seconds", "default_value": 0.0, "optional": False}])
+
+
+def test_sample_sheet_validation_string_type():
+    validate_row(["sample1"], [{"type": "string", "name": "condition", "default_value": "none", "optional": False}])
+
+    with pytest.raises(RequestParameterInvalidException):
+        validate_row([1], [{"type": "string", "name": "condition", "default_value": "none", "optional": False}])
+
+    # restrict characters that might interfere with CSV/TSV serialization
+    with pytest.raises(RequestParameterInvalidException):
+        validate_row(
+            ["sample1\t"], [{"type": "string", "name": "condition", "default_value": "none", "optional": False}]
+        )
+
+    with pytest.raises(RequestParameterInvalidException):
+        validate_row(
+            ['sample1"'], [{"type": "string", "name": "condition", "default_value": "none", "optional": False}]
+        )
+
+    with pytest.raises(RequestParameterInvalidException):
+        validate_row(
+            ["sample1'"], [{"type": "string", "name": "condition", "default_value": "none", "optional": False}]
+        )
+
+    # but allow simple spaces even though we don't allow tabs/newlines in the sheet.
+    validate_row(
+        ["sample1 is cool"], [{"type": "string", "name": "condition", "default_value": "none", "optional": False}]
+    )
+
+
+def test_sample_sheet_validation_boolean_type():
+    validate_row([True], [{"type": "boolean", "name": "control?", "optional": False}])
+
+    with pytest.raises(RequestParameterInvalidException):
+        validate_row([1], [{"type": "boolean", "name": "control?", "optional": False}])
+
+
+def test_sample_sheet_element_identifiers_type():
+    validate_row(["sample1"], [{"type": "element_identifier", "name": "control_element", "optional": False}])
+
+    with pytest.raises(RequestParameterInvalidException):
+        # not an actual element identifier from the rest of the collection
+        validate_row(["sample6"], [{"type": "element_identifier", "name": "control_element", "optional": False}])
+
+    with pytest.raises(RequestParameterInvalidException):
+        # invalid type
+        validate_row([3], [{"type": "element_identifier", "name": "control_element", "optional": False}])
+
+
+def test_sample_sheet_validation_restrictions():
+    validate_row(
+        ["control"],
+        [
+            {
+                "type": "string",
+                "restrictions": ["treatment", "control"],
+                "name": "condition",
+                "default_value": "treatment",
+                "optional": False,
+            }
+        ],
+    )
+
+    with pytest.raises(RequestParameterInvalidException):
+        validate_row(
+            ["controlx"],
+            [
+                {
+                    "type": "string",
+                    "restrictions": ["treatment", "control"],
+                    "name": "condition",
+                    "default_value": "treatment",
+                    "optional": False,
+                }
+            ],
+        )
+
+
+def test_sample_sheet_validation_length():
+    column_definitions = [
+        {
+            "type": "string",
+            "validators": [{"type": "length", "min": 6}],
+            "name": "condition",
+            "default_value": "default",
+            "optional": False,
+        }
+    ]
+    validate_row(["treatment"], column_definitions)
+
+    with pytest.raises(RequestParameterInvalidException):
+        validate_row(["treat"], column_definitions)
+
+
+def test_sample_sheet_validation_min_max():
+    column_definitions = [
+        {"type": "int", "validators": [{"type": "in_range", "min": 6}], "name": "replicate number", "optional": False}
+    ]
+    validate_row([7], column_definitions)
+
+    with pytest.raises(RequestParameterInvalidException):
+        validate_row([5], column_definitions)
+
+
+def test_column_definitions_validators_on_valid_defs():
+    column_definitions = [
+        {
+            "type": "string",
+            "restrictions": ["treatment", "control"],
+            "name": "condition",
+            "default_value": "treatment",
+            "optional": False,
+        }
+    ]
+    validate_column_definitions(column_definitions)
+
+
+def test_column_definitions_validators_invalid_length():
+    column_definitions = [
+        {
+            "type": "string",
+            "validators": [{"type": "length", "min": 6}],
+            "name": "condition",
+            "default_value": "default",
+            "optional": False,
+        }
+    ]
+    validate_column_definitions(column_definitions)
+
+
+def test_column_definitions_do_not_allow_unsafe_validators():
+    column_definitions = [
+        {
+            "type": "string",
+            "name": "condition",
+            "validators": [
+                {"type": "expression", "expression": "False"},
+            ],
+            "default_value": "default",
+            "optional": False,
+        }
+    ]
+
+    with pytest.raises(RequestParameterInvalidException):
+        validate_column_definitions(column_definitions)
+
+
+def test_column_definitions_do_not_allow_special_characters_in_column_name():
+    column_definitions = [
+        {
+            "type": "string",
+            "name": "condition\t",
+            "default_value": "default",
+            "optional": False,
+        }
+    ]
+
+    with pytest.raises(RequestParameterInvalidException):
+        validate_column_definitions(column_definitions)
diff --git a/test/unit/data/dataset_collections/test_sample_sheet_workbook.py b/test/unit/data/dataset_collections/test_sample_sheet_workbook.py
new file mode 100644
index 00000000000..02478e537f7
--- /dev/null
+++ b/test/unit/data/dataset_collections/test_sample_sheet_workbook.py
@@ -0,0 +1,299 @@
+import base64
+import json
+import os
+from typing import List
+
+from galaxy.model.dataset_collections.types.sample_sheet_util import (
+    SampleSheetColumnDefinitionsModel,
+)
+from galaxy.model.dataset_collections.types.sample_sheet_workbook import (
+    CreateWorkbook,
+    CreateWorkbookFromBase64,
+    CreateWorkbookFromBase64ForCollection,
+    DatasetCollectionElementLike,
+    DatasetCollectionLike,
+    DEFAULT_TITLE,
+    generate_workbook,
+    generate_workbook_from_base64,
+    generate_workbook_from_base64_for_collection,
+    parse_workbook,
+    parse_workbook_for_collection,
+    ParseWorkbook,
+    ParseWorkbookForCollection,
+)
+from galaxy.util.resources import resource_path
+
+WRITE_TEST_WORKBOOKS = False
+TEST_DATA = [
+    ["https://zenodo.org/records/3263975/files/DRR000770.fastqsanger.gz", "DRR000770", 1, "treatment1", False],
+    ["https://zenodo.org/records/3263975/files/DRR000771.fastqsanger.gz", "DRR000771", 2, "treatment1", False],
+    ["https://zenodo.org/records/3263975/files/DRR000772.fastqsanger.gz", "DRR000772", 1, "none", True],
+    ["https://zenodo.org/records/3263975/files/DRR000773.fastqsanger.gz", "DRR000773", 1, "treatment2", False],
+    ["https://zenodo.org/records/3263975/files/DRR000774.fastqsanger.gz", "DRR000774", 2, "treatment3", False],
+    [
+        "https://zenodo.org/records/3263975/files/DRR000775.fastqsanger.gz",
+        "DRR000775",
+        "badnumber",
+        "treatment2",
+        False,
+    ],
+    ["https://zenodo.org/records/3263975/files/DRR000776.fastqsanger.gz", "DRR000776", 2, "wrongtreament", False],
+    ["https://zenodo.org/records/3263975/files/DRR000777.fastqsanger.gz", "DRR000777", 3, "treatment2", "badbool"],
+]
+TEST_COLUMN_DEFINITIONS_1 = [
+    {
+        "name": "replicate number",
+        "type": "int",
+        "description": "The replicate number of this sample.",
+        "default_value": 0,
+        "optional": False,
+    },
+    {
+        "name": "treatment",
+        "type": "string",
+        "restrictions": ["treatment1", "treatment2", "none"],
+        "description": "The treatment code for this sample.",
+        "default_value": "none",
+        "optional": False,
+    },
+    {
+        "name": "is control?",
+        "type": "boolean",
+        "description": "Was this sample a control? If TRUE, please ensure treatment is set to none.",
+        "default_value": True,
+        "optional": False,
+    },
+]
+
+
+def test_generate_without_seed_data():
+    create = CreateWorkbook.model_validate(
+        {"collection_type": "sample_sheet", "column_definitions": TEST_COLUMN_DEFINITIONS_1}
+    )
+    workbook = generate_workbook(create)
+    if WRITE_TEST_WORKBOOKS:
+        for index, row in enumerate(TEST_DATA):
+            for col, column in enumerate(row):
+                workbook.active.cell(row=index + 2, column=col + 1, value=column)
+
+        path = "~/test_workbook.xlsx"
+        expanded_path = os.path.expanduser(path)
+        workbook.save(expanded_path)
+
+
+def test_generate_base64_without_seed_data():
+    column_definition_base64 = column_definitions_to_base64(TEST_COLUMN_DEFINITIONS_1)
+    create = CreateWorkbookFromBase64(collection_type="sample_sheet", column_definitions=column_definition_base64)
+    workbook = generate_workbook_from_base64(create)
+    if WRITE_TEST_WORKBOOKS:
+        for index, row in enumerate(TEST_DATA):
+            for col, column in enumerate(row):
+                workbook.active.cell(row=index + 2, column=col + 1, value=column)
+
+        path = "~/test_workbook_from_base64.xlsx"
+        expanded_path = os.path.expanduser(path)
+        workbook.save(expanded_path)
+
+
+def test_generate_with_seed_data():
+    create = CreateWorkbook.model_validate(
+        {
+            "collection_type": "sample_sheet",
+            "column_definitions": TEST_COLUMN_DEFINITIONS_1,
+            "prefix_values": [
+                ["https://zenodo.org/records/3263975/files/DRR000770.fastqsanger.gz", "DRR000770"],
+                ["https://zenodo.org/records/3263975/files/DRR000771.fastqsanger.gz", "DRR000770"],
+            ],
+        }
+    )
+    workbook = generate_workbook(create)
+    if WRITE_TEST_WORKBOOKS:
+        path = "~/test_workbook_seeded.xlsx"
+        expanded_path = os.path.expanduser(path)
+        workbook.save(expanded_path)
+
+
+def test_generate_with_seed_data_paired():
+    create = CreateWorkbook.model_validate(
+        {
+            "collection_type": "sample_sheet:paired",
+            "column_definitions": TEST_COLUMN_DEFINITIONS_1,
+            "prefix_values": [
+                [
+                    "https://zenodo.org/record/3554549/files/SRR1799908_forward.fastq",
+                    "https://zenodo.org/record/3554549/files/SRR1799908_reverse.fastq",
+                    "SRR1799908",
+                ],
+            ],
+        }
+    )
+    workbook = generate_workbook(create)
+    if WRITE_TEST_WORKBOOKS:
+        path = "~/test_workbook_seeded_paired.xlsx"
+        expanded_path = os.path.expanduser(path)
+        workbook.save(expanded_path)
+
+
+class MockDatasetCollectionElement(DatasetCollectionElementLike):
+
+    def __init__(self, id: int, element_identifier: str):
+        self.id = id
+        self.element_identifier = element_identifier
+
+
+class MockDatasetCollection(DatasetCollectionLike):
+    elements: List[DatasetCollectionElementLike]
+    collection_type: str = "list"
+
+    def __init__(self, id: int):
+        self.id = id
+        self.elements = []
+
+
+def test_generate_from_collection():
+    column_definitions_base64 = column_definitions_to_base64(TEST_COLUMN_DEFINITIONS_1)
+    collection = _mock_collection()
+    create = CreateWorkbookFromBase64ForCollection(
+        title=DEFAULT_TITLE,
+        dataset_collection=collection,
+        column_definitions=column_definitions_base64,
+    )
+    workbook = generate_workbook_from_base64_for_collection(create)
+    if WRITE_TEST_WORKBOOKS:
+        path = "~/test_workbook_seeded_from_collection.xlsx"
+        expanded_path = os.path.expanduser(path)
+        workbook.save(expanded_path)
+
+
+def test_parse_base64_workbook():
+    content_base64 = unittest_file_to_base64("filled_in_workbook_1.xlsx")
+    parse_payload = ParseWorkbook(
+        collection_type="sample_sheet",
+        column_definitions=TEST_COLUMN_DEFINITIONS_1,
+        content=content_base64,
+    )
+    result = parse_workbook(parse_payload)
+    rows = result.rows
+    assert rows
+    first_row = result.rows[0]
+    assert first_row["url"] == "https://zenodo.org/records/3263975/files/DRR000770.fastqsanger.gz"
+    assert first_row["replicate number"] == 1
+    assert first_row["treatment"] == "treatment1"
+    assert first_row["is control?"] is False
+    second_row = result.rows[1]
+    assert second_row["replicate number"] == 2
+    assert second_row["treatment"] == "treatment1"
+
+
+def test_parse_base64_workbook_tsv():
+    content_base64 = unittest_file_to_base64("filled_in_workbook_1.tsv")
+    parse_payload = ParseWorkbook(
+        collection_type="sample_sheet",
+        column_definitions=TEST_COLUMN_DEFINITIONS_1,
+        content=content_base64,
+    )
+    result = parse_workbook(parse_payload)
+    rows = result.rows
+    assert rows
+    first_row = result.rows[0]
+    assert first_row["url"] == "https://zenodo.org/records/3263975/files/DRR000770.fastqsanger.gz"
+    assert first_row["replicate number"] == 1
+    assert first_row["treatment"] == "treatment1"
+    assert first_row["is control?"] is False
+    second_row = result.rows[1]
+    assert second_row["replicate number"] == 2
+    assert second_row["treatment"] == "treatment1"
+
+
+def test_parse_base64_workbook_with_dbkey_column():
+    content_base64 = unittest_file_to_base64("filled_in_workbook_1_with_dbkey.xlsx")
+    parse_payload = ParseWorkbook(
+        collection_type="sample_sheet",
+        column_definitions=TEST_COLUMN_DEFINITIONS_1,
+        content=content_base64,
+    )
+    result = parse_workbook(parse_payload)
+    rows = result.rows
+    assert rows
+    first_row = result.rows[0]
+    assert first_row["url"] == "https://zenodo.org/records/3263975/files/DRR000770.fastqsanger.gz"
+    assert first_row["replicate number"] == 1
+    assert first_row["treatment"] == "treatment1"
+    assert first_row["is control?"] is False
+    assert result.extra_columns[0].type == "dbkey"
+    assert first_row["dbkey"] == "hg18"
+
+
+def test_parse_base64_workbook_paired():
+    content_base64 = unittest_file_to_base64("filled_in_workbook_paired.xlsx")
+    parse_payload = ParseWorkbook(
+        collection_type="sample_sheet:paired",
+        column_definitions=TEST_COLUMN_DEFINITIONS_1,
+        content=content_base64,
+    )
+    result = parse_workbook(parse_payload)
+    rows = result.rows
+    assert rows
+    assert result.rows[0]["url"] == "https://zenodo.org/record/3554549/files/SRR1799908_forward.fastq"
+    assert result.rows[0]["url_1"] == "https://zenodo.org/record/3554549/files/SRR1799908_reverse.fastq"
+    assert result.rows[0]["replicate number"] == 1
+    assert result.rows[0]["treatment"] == "treatment1"
+    assert result.rows[0]["is control?"] is False
+
+
+def test_parse_base64_workbook_paired_or_unpaired():
+    content_base64 = unittest_file_to_base64("filled_in_workbook_paired_or_unpaired.xlsx")
+    parse_payload = ParseWorkbook(
+        collection_type="sample_sheet:paired_or_unpaired",
+        column_definitions=TEST_COLUMN_DEFINITIONS_1,
+        content=content_base64,
+    )
+    result = parse_workbook(parse_payload)
+    rows = result.rows
+    assert rows
+    assert result.rows[0]["url"] == "https://raw.githubusercontent.com/galaxyproject/galaxy/dev/test-data/4.bed"
+    assert result.rows[0]["url_1"] is None
+    assert result.rows[0]["replicate number"] == 1
+    assert result.rows[0]["treatment"] == "treatment1"
+    assert result.rows[0]["is control?"] is False
+
+    assert result.rows[1]["url"] == "https://raw.githubusercontent.com/galaxyproject/galaxy/dev/test-data/4.bed"
+    assert result.rows[1]["url_1"] == "https://raw.githubusercontent.com/galaxyproject/galaxy/dev/test-data/4.bed"
+    assert result.rows[1]["replicate number"] == 2
+    assert result.rows[1]["treatment"] == "treatment2"
+    assert result.rows[1]["is control?"] is True
+
+
+def test_parse_base64_workbook_from_collection():
+    content_base64 = unittest_file_to_base64("filled_in_workbook_from_collection.xlsx")
+    collection = _mock_collection()
+    parse_payload = ParseWorkbookForCollection(
+        column_definitions=SampleSheetColumnDefinitionsModel.model_validate(TEST_COLUMN_DEFINITIONS_1).root,
+        dataset_collection=collection,
+        content=content_base64,
+    )
+    result = parse_workbook_for_collection(parse_payload)
+    rows = result.rows
+    assert rows
+
+
+def column_definitions_to_base64(column_definitions):
+    json_string = json.dumps(column_definitions)
+    return base64.b64encode(json_string.encode("utf-8")).decode("utf-8")
+
+
+def unittest_file_to_base64(filename: str) -> str:
+    path = resource_path("galaxy.model.unittest_utils", filename)
+    example_as_bytes = path.read_bytes()
+    content_base64 = base64.b64encode(example_as_bytes).decode("utf-8")
+    return content_base64
+
+
+def _mock_collection() -> MockDatasetCollection:
+    collection = MockDatasetCollection(23)
+    dce = MockDatasetCollectionElement(
+        45,
+        element_identifier="sample1",
+    )
+    collection.elements.append(dce)
+    return collection
diff --git a/test/unit/data/model/test_model_discovery.py b/test/unit/data/model/test_model_discovery.py
index af3685669c6..b81690bd2f6 100644
--- a/test/unit/data/model/test_model_discovery.py
+++ b/test/unit/data/model/test_model_discovery.py
@@ -274,6 +274,134 @@ def test_persist_target_list_paired():
         assert f.read().startswith("file 2 contents")
 
 
+def test_persist_target_sample_sheet():
+    work_directory = mkdtemp()
+    with open(os.path.join(work_directory, "file1.txt"), "w") as f:
+        f.write("hello world\nhello world line 2")
+    with open(os.path.join(work_directory, "file2.txt"), "w") as f:
+        f.write("file 2 contents")
+
+    target = {
+        "destination": {
+            "type": "hdca",
+        },
+        "name": "My HDCA",
+        "collection_type": "sample_sheet",
+        "column_definitions": [
+            {"type": "int", "name": "replicate number", "default_value": 0},
+        ],
+        "elements": [
+            {
+                "filename": "file1.txt",
+                "ext": "txt",
+                "dbkey": "hg19",
+                "info": "dataset info",
+                "name": "my file",
+                "row": [42],
+            },
+            {
+                "filename": "file2.txt",
+                "ext": "txt",
+                "dbkey": "hg18",
+                "info": "dataset info 2",
+                "name": "my file 2",
+                "row": [43],
+            },
+        ],
+    }
+
+    app = _mock_app()
+    temp_directory = mkdtemp()
+    with store.DirectoryModelExportStore(temp_directory, serialize_dataset_objects=True) as export_store:
+        persist_target_to_export_store(target, export_store, app.object_store, work_directory)
+
+    import_history = _import_directory_to_history(app, temp_directory, work_directory)
+    assert len(import_history.dataset_collections) == 1
+    assert len(import_history.datasets) == 2
+
+    import_hdca = import_history.dataset_collections[0]
+
+    dces = import_hdca.collection.elements
+    assert len(dces) == 2
+    assert dces[0].columns[0] == 42
+    assert dces[1].columns[0] == 43
+
+    datasets = import_hdca.dataset_instances
+    assert len(datasets) == 2
+    dataset0 = datasets[0]
+    dataset1 = datasets[1]
+
+    with open(dataset0.get_file_name()) as f:
+        assert f.read().startswith("hello world\n")
+    with open(dataset1.get_file_name()) as f:
+        assert f.read().startswith("file 2 contents")
+
+
+def test_persist_target_sample_sheet_paired():
+    work_directory = mkdtemp()
+    with open(os.path.join(work_directory, "file1.txt"), "w") as f:
+        f.write("hello world\nhello world line 2")
+    with open(os.path.join(work_directory, "file2.txt"), "w") as f:
+        f.write("file 2 contents")
+
+    target = {
+        "destination": {
+            "type": "hdca",
+        },
+        "name": "My HDCA",
+        "collection_type": "sample_sheet:paired",
+        "elements": [
+            {
+                "name": "sample1",
+                "row": [42],
+                "elements": [
+                    {
+                        "filename": "file1.txt",
+                        "ext": "txt",
+                        "dbkey": "hg19",
+                        "info": "dataset info",
+                        "name": "forward",
+                    },
+                    {
+                        "filename": "file2.txt",
+                        "ext": "txt",
+                        "dbkey": "hg18",
+                        "info": "dataset info 2",
+                        "name": "reverse",
+                    },
+                ],
+            }
+        ],
+    }
+
+    app = _mock_app()
+    temp_directory = mkdtemp()
+    with store.DirectoryModelExportStore(temp_directory, serialize_dataset_objects=True) as export_store:
+        persist_target_to_export_store(target, export_store, app.object_store, work_directory)
+
+    import_history = _import_directory_to_history(app, temp_directory, work_directory)
+    assert len(import_history.dataset_collections) == 1
+    assert len(import_history.datasets) == 2
+
+    import_hdca = import_history.dataset_collections[0]
+    assert import_hdca.collection.collection_type == "sample_sheet:paired"
+    columns = import_hdca.collection.elements[0].columns
+    assert columns[0] == 42
+
+    paired_collection = import_hdca.collection.elements[0].child_collection
+    assert paired_collection.collection_type == "paired"
+    datasets = paired_collection.dataset_instances
+
+    assert len(datasets) == 2
+    dataset0 = datasets[0]
+    dataset1 = datasets[1]
+
+    with open(dataset0.get_file_name()) as f:
+        assert f.read().startswith("hello world\n")
+    with open(dataset1.get_file_name()) as f:
+        assert f.read().startswith("file 2 contents")
+
+
 def _assert_one_library_created(sa_session):
     all_libraries = sa_session.scalars(select(model.Library)).all()
     assert len(all_libraries) == 1, len(all_libraries)