diff --git a/components/replication/new-form.tsx b/components/replication/new-form.tsx
index baace19..3380f6a 100644
--- a/components/replication/new-form.tsx
+++ b/components/replication/new-form.tsx
@@ -7,6 +7,7 @@ import { RiAddLine, RiDeleteBinLine } from "@remixicon/react"
 import { Button } from "@/components/ui/button"
 import { Input } from "@/components/ui/input"
 import { Switch } from "@/components/ui/switch"
+import { Textarea } from "@/components/ui/textarea"
 import { Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle } from "@/components/ui/dialog"
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select"
 import { Field, FieldContent, FieldError, FieldLabel } from "@/components/ui/field"
@@ -14,6 +15,7 @@ import { useBucket } from "@/hooks/use-bucket"
 import { useMessage } from "@/lib/feedback/message"
 import { getBytes, randomUUID } from "@/lib/functions"
 import { isMissingBucketConfiguration, normalizeReplicationRulesForRolelessConfig } from "@/lib/bucket-configuration"
+import { buildBucketReplicationTlsPayload, type BucketReplicationTlsMode } from "@/lib/bucket-replication-tls"
 
 interface ReplicationNewFormProps {
   open: boolean
@@ -39,6 +41,8 @@ export function ReplicationNewForm({ open, onOpenChange, bucketName, onSuccess }
   const [level, setLevel] = useState("1")
   const [endpoint, setEndpoint] = useState("")
   const [tls, setTls] = useState(false)
+  const [tlsMode, setTlsMode] = useState<BucketReplicationTlsMode>("verify")
+  const [caCertPem, setCaCertPem] = useState("")
   const [accessKey, setAccessKey] = useState("")
   const [secretKey, setSecretKey] = useState("")
   const [bucket, setBucket] = useState("")
@@ -61,6 +65,7 @@ export function ReplicationNewForm({ open, onOpenChange, bucketName, onSuccess }
     accessKey?: string
     secretKey?: string
     timecheck?: string
+    caCertPem?: string
   }>({})
 
   const modeOptions = useMemo(
@@ -84,6 +89,8 @@ export function ReplicationNewForm({ open, onOpenChange, bucketName, onSuccess }
     setLevel("1")
     setEndpoint("")
     setTls(false)
+    setTlsMode("verify")
+    setCaCertPem("")
     setAccessKey("")
     setSecretKey("")
     setBucket("")
@@ -134,6 +141,9 @@ export function ReplicationNewForm({ open, onOpenChange, bucketName, onSuccess }
     if (modeType === "async" && Number(timecheck) < 1) {
       errors.timecheck = t("Please enter valid health check interval")
     }
+    if (tls && tlsMode === "custom-ca" && !caCertPem.trim()) {
+      errors.caCertPem = t("Custom CA certificate is required")
+    }
     setFieldErrors(errors)
     const firstErrorId = errors.endpoint
       ? "replication-endpoint"
@@ -145,7 +155,9 @@ export function ReplicationNewForm({ open, onOpenChange, bucketName, onSuccess }
             ? "replication-secret-key"
             : errors.timecheck
               ? "replication-health-check-interval"
-              : null
+              : errors.caCertPem
+                ? "replication-ca-certificate"
+                : null
     if (firstErrorId) document.getElementById(firstErrorId)?.focus()
     return !firstErrorId
   }
@@ -161,6 +173,7 @@ export function ReplicationNewForm({ open, onOpenChange, bucketName, onSuccess }
     setSaveError("")
     let remoteTargetSaved = false
     try {
+      const tlsConfig = buildBucketReplicationTlsPayload(tls, tlsMode, caCertPem)
       const config: Record<string, unknown> = {
         sourcebucket: bucketName,
         endpoint,
@@ -171,6 +184,8 @@ export function ReplicationNewForm({ open, onOpenChange, bucketName, onSuccess }
         },
         targetbucket: bucket,
         secure: tls,
+        skipTlsVerify: tlsConfig.skipTlsVerify,
+        caCertPem: tlsConfig.caCertPem,
         region,
         path: "auto",
         api: "s3v4",
@@ -566,9 +581,91 @@ export function ReplicationNewForm({ open, onOpenChange, bucketName, onSuccess }
                     {t("Enable secure transport when connecting to endpoint.")}
                   </p>
                 </div>
-                <Switch id="replication-use-tls" name="replication-use-tls" checked={tls} onCheckedChange={setTls} />
+                <Switch
+                  id="replication-use-tls"
+                  name="replication-use-tls"
+                  checked={tls}
+                  disabled={submitting}
+                  onCheckedChange={(checked) => {
+                    setTls(checked)
+                    if (!checked) {
+                      setTlsMode("verify")
+                      setCaCertPem("")
+                      setFieldErrors((current) => ({ ...current, caCertPem: undefined }))
+                    }
+                  }}
+                />
               </div>
 
+              {tls ? (
+                <div className="space-y-3 border-s-2 border-border ps-4">
+                  <Field>
+                    <FieldLabel htmlFor="replication-tls-verification">{t("TLS Verification")}</FieldLabel>
+                    <FieldContent>
+                      <Select
+                        value={tlsMode}
+                        onValueChange={(value) => {
+                          if (value) setTlsMode(value as BucketReplicationTlsMode)
+                          setFieldErrors((current) => ({ ...current, caCertPem: undefined }))
+                        }}
+                        disabled={submitting}
+                      >
+                        <SelectTrigger id="replication-tls-verification" className="w-full">
+                          <SelectValue />
+                        </SelectTrigger>
+                        <SelectContent>
+                          <SelectItem value="verify">{t("Default certificate verification")}</SelectItem>
+                          <SelectItem value="custom-ca">{t("Custom CA certificate")}</SelectItem>
+                          <SelectItem value="skip">{t("Skip TLS verification")}</SelectItem>
+                        </SelectContent>
+                      </Select>
+                    </FieldContent>
+                  </Field>
+
+                  {tlsMode === "custom-ca" ? (
+                    <Field>
+                      <FieldLabel htmlFor="replication-ca-certificate">{t("Custom CA certificate")}</FieldLabel>
+                      <FieldContent>
+                        <Textarea
+                          id="replication-ca-certificate"
+                          name="replication-ca-certificate"
+                          value={caCertPem}
+                          onChange={(event) => {
+                            setCaCertPem(event.target.value)
+                            if (event.target.value.trim()) {
+                              setFieldErrors((current) => ({ ...current, caCertPem: undefined }))
+                            }
+                          }}
+                          aria-invalid={Boolean(fieldErrors.caCertPem)}
+                          aria-describedby={
+                            fieldErrors.caCertPem
+                              ? "replication-ca-certificate-error"
+                              : "replication-ca-certificate-description"
+                          }
+                          className="min-h-32 font-mono"
+                          placeholder="-----BEGIN CERTIFICATE-----"
+                          disabled={submitting}
+                          spellCheck={false}
+                        />
+                      </FieldContent>
+                      <p id="replication-ca-certificate-description" className="text-xs text-muted-foreground">
+                        {t("Paste the CA certificate in PEM format.")}
+                      </p>
+                      <FieldError id="replication-ca-certificate-error">{fieldErrors.caCertPem}</FieldError>
+                    </Field>
+                  ) : null}
+
+                  {tlsMode === "skip" ? (
+                    <p
+                      role="alert"
+                      className="border border-destructive/40 bg-destructive/5 p-3 text-xs text-destructive"
+                    >
+                      {t("Certificate verification is disabled. Only use this for trusted networks.")}
+                    </p>
+                  ) : null}
+                </div>
+              ) : null}
+
               <div className="flex items-center justify-between">
                 <div>
                   <label htmlFor="replication-existing-object" className="text-sm font-medium">
diff --git a/i18n/locales/ar-MA.json b/i18n/locales/ar-MA.json
index 80a7877..8449cb0 100644
--- a/i18n/locales/ar-MA.json
+++ b/i18n/locales/ar-MA.json
@@ -1061,6 +1061,12 @@
   "Size": "الحجم",
   "Skip": "تخطي",
   "Skip TLS verification": "تخطي التحقق من TLS",
+  "Certificate verification is disabled. Only use this for trusted networks.": "Certificate verification is disabled. Only use this for trusted networks.",
+  "Custom CA certificate": "Custom CA certificate",
+  "Custom CA certificate is required": "Custom CA certificate is required",
+  "Default certificate verification": "Default certificate verification",
+  "Paste the CA certificate in PEM format.": "Paste the CA certificate in PEM format.",
+  "TLS Verification": "TLS Verification",
   "Skip to main content": "تخطي إلى المحتوى الرئيسي",
   "Sort by": "ترتيب حسب",
   "Source": "المصدر",
diff --git a/i18n/locales/de-DE.json b/i18n/locales/de-DE.json
index e38f1e1..220e64b 100644
--- a/i18n/locales/de-DE.json
+++ b/i18n/locales/de-DE.json
@@ -1066,6 +1066,12 @@
   "Size": "Größe",
   "Skip": "Überspringen",
   "Skip TLS verification": "TLS-Überprüfung überspringen",
+  "Certificate verification is disabled. Only use this for trusted networks.": "Certificate verification is disabled. Only use this for trusted networks.",
+  "Custom CA certificate": "Custom CA certificate",
+  "Custom CA certificate is required": "Custom CA certificate is required",
+  "Default certificate verification": "Default certificate verification",
+  "Paste the CA certificate in PEM format.": "Paste the CA certificate in PEM format.",
+  "TLS Verification": "TLS Verification",
   "Skip to main content": "Zum Hauptinhalt springen",
   "Sort by": "Sortieren nach",
   "Source": "Quelle",
diff --git a/i18n/locales/en-US.json b/i18n/locales/en-US.json
index 1b2a6cf..e2d3e21 100644
--- a/i18n/locales/en-US.json
+++ b/i18n/locales/en-US.json
@@ -1066,6 +1066,12 @@
   "Size": "Size",
   "Skip": "Skip",
   "Skip TLS verification": "Skip TLS verification",
+  "Certificate verification is disabled. Only use this for trusted networks.": "Certificate verification is disabled. Only use this for trusted networks.",
+  "Custom CA certificate": "Custom CA certificate",
+  "Custom CA certificate is required": "Custom CA certificate is required",
+  "Default certificate verification": "Default certificate verification",
+  "Paste the CA certificate in PEM format.": "Paste the CA certificate in PEM format.",
+  "TLS Verification": "TLS Verification",
   "Skip to main content": "Skip to main content",
   "Sort by": "Sort by",
   "Source": "Source",
diff --git a/i18n/locales/es-ES.json b/i18n/locales/es-ES.json
index a963dc7..1e9ed96 100644
--- a/i18n/locales/es-ES.json
+++ b/i18n/locales/es-ES.json
@@ -1066,6 +1066,12 @@
   "Size": "Tamaño",
   "Skip": "Omitir",
   "Skip TLS verification": "Omitir verificación TLS",
+  "Certificate verification is disabled. Only use this for trusted networks.": "Certificate verification is disabled. Only use this for trusted networks.",
+  "Custom CA certificate": "Custom CA certificate",
+  "Custom CA certificate is required": "Custom CA certificate is required",
+  "Default certificate verification": "Default certificate verification",
+  "Paste the CA certificate in PEM format.": "Paste the CA certificate in PEM format.",
+  "TLS Verification": "TLS Verification",
   "Skip to main content": "Saltar al contenido principal",
   "Sort by": "Ordenar por",
   "Source": "Origen",
diff --git a/i18n/locales/fr-FR.json b/i18n/locales/fr-FR.json
index e5bb0d7..8e2225f 100644
--- a/i18n/locales/fr-FR.json
+++ b/i18n/locales/fr-FR.json
@@ -1066,6 +1066,12 @@
   "Size": "Taille",
   "Skip": "Ignorer",
   "Skip TLS verification": "Ignorer la vérification TLS",
+  "Certificate verification is disabled. Only use this for trusted networks.": "Certificate verification is disabled. Only use this for trusted networks.",
+  "Custom CA certificate": "Custom CA certificate",
+  "Custom CA certificate is required": "Custom CA certificate is required",
+  "Default certificate verification": "Default certificate verification",
+  "Paste the CA certificate in PEM format.": "Paste the CA certificate in PEM format.",
+  "TLS Verification": "TLS Verification",
   "Skip to main content": "Aller au contenu principal",
   "Sort by": "Trier par",
   "Source": "Source",
diff --git a/i18n/locales/id-ID.json b/i18n/locales/id-ID.json
index 668029b..5996a81 100644
--- a/i18n/locales/id-ID.json
+++ b/i18n/locales/id-ID.json
@@ -1066,6 +1066,12 @@
   "Size": "Ukuran",
   "Skip": "Lewati",
   "Skip TLS verification": "Lewati verifikasi TLS",
+  "Certificate verification is disabled. Only use this for trusted networks.": "Certificate verification is disabled. Only use this for trusted networks.",
+  "Custom CA certificate": "Custom CA certificate",
+  "Custom CA certificate is required": "Custom CA certificate is required",
+  "Default certificate verification": "Default certificate verification",
+  "Paste the CA certificate in PEM format.": "Paste the CA certificate in PEM format.",
+  "TLS Verification": "TLS Verification",
   "Skip to main content": "Lewati ke konten utama",
   "Sort by": "Urutkan berdasarkan",
   "Source": "Sumber",
diff --git a/i18n/locales/it-IT.json b/i18n/locales/it-IT.json
index 55b37c9..221c086 100644
--- a/i18n/locales/it-IT.json
+++ b/i18n/locales/it-IT.json
@@ -1066,6 +1066,12 @@
   "Size": "Dimensione",
   "Skip": "Salta",
   "Skip TLS verification": "Salta verifica TLS",
+  "Certificate verification is disabled. Only use this for trusted networks.": "Certificate verification is disabled. Only use this for trusted networks.",
+  "Custom CA certificate": "Custom CA certificate",
+  "Custom CA certificate is required": "Custom CA certificate is required",
+  "Default certificate verification": "Default certificate verification",
+  "Paste the CA certificate in PEM format.": "Paste the CA certificate in PEM format.",
+  "TLS Verification": "TLS Verification",
   "Skip to main content": "Vai al contenuto principale",
   "Sort by": "Ordina per",
   "Source": "Sorgente",
diff --git a/i18n/locales/ja-JP.json b/i18n/locales/ja-JP.json
index 31b6276..4907d4b 100644
--- a/i18n/locales/ja-JP.json
+++ b/i18n/locales/ja-JP.json
@@ -1061,6 +1061,12 @@
   "Size": "サイズ",
   "Skip": "スキップ",
   "Skip TLS verification": "TLS 検証をスキップ",
+  "Certificate verification is disabled. Only use this for trusted networks.": "Certificate verification is disabled. Only use this for trusted networks.",
+  "Custom CA certificate": "Custom CA certificate",
+  "Custom CA certificate is required": "Custom CA certificate is required",
+  "Default certificate verification": "Default certificate verification",
+  "Paste the CA certificate in PEM format.": "Paste the CA certificate in PEM format.",
+  "TLS Verification": "TLS Verification",
   "Skip to main content": "メインコンテンツへスキップ",
   "Sort by": "並び替え",
   "Source": "ソース",
diff --git a/i18n/locales/ko-KR.json b/i18n/locales/ko-KR.json
index 799dbd9..a4dbb34 100644
--- a/i18n/locales/ko-KR.json
+++ b/i18n/locales/ko-KR.json
@@ -1061,6 +1061,12 @@
   "Size": "크기",
   "Skip": "건너뛰기",
   "Skip TLS verification": "TLS 검증 건너뛰기",
+  "Certificate verification is disabled. Only use this for trusted networks.": "Certificate verification is disabled. Only use this for trusted networks.",
+  "Custom CA certificate": "Custom CA certificate",
+  "Custom CA certificate is required": "Custom CA certificate is required",
+  "Default certificate verification": "Default certificate verification",
+  "Paste the CA certificate in PEM format.": "Paste the CA certificate in PEM format.",
+  "TLS Verification": "TLS Verification",
   "Skip to main content": "기본 콘텐츠로 건너뛰기",
   "Sort by": "정렬 기준",
   "Source": "소스",
diff --git a/i18n/locales/pt-BR.json b/i18n/locales/pt-BR.json
index af608a7..953b69e 100644
--- a/i18n/locales/pt-BR.json
+++ b/i18n/locales/pt-BR.json
@@ -1066,6 +1066,12 @@
   "Size": "Tamanho",
   "Skip": "Pular",
   "Skip TLS verification": "Ignorar verificação TLS",
+  "Certificate verification is disabled. Only use this for trusted networks.": "Certificate verification is disabled. Only use this for trusted networks.",
+  "Custom CA certificate": "Custom CA certificate",
+  "Custom CA certificate is required": "Custom CA certificate is required",
+  "Default certificate verification": "Default certificate verification",
+  "Paste the CA certificate in PEM format.": "Paste the CA certificate in PEM format.",
+  "TLS Verification": "TLS Verification",
   "Skip to main content": "Ir para o conteúdo principal",
   "Sort by": "Ordenar por",
   "Source": "Origem",
diff --git a/i18n/locales/ru-RU.json b/i18n/locales/ru-RU.json
index 3d42a8e..c574430 100644
--- a/i18n/locales/ru-RU.json
+++ b/i18n/locales/ru-RU.json
@@ -1066,6 +1066,12 @@
   "Size": "Размер",
   "Skip": "Пропустить",
   "Skip TLS verification": "Пропустить проверку TLS",
+  "Certificate verification is disabled. Only use this for trusted networks.": "Certificate verification is disabled. Only use this for trusted networks.",
+  "Custom CA certificate": "Custom CA certificate",
+  "Custom CA certificate is required": "Custom CA certificate is required",
+  "Default certificate verification": "Default certificate verification",
+  "Paste the CA certificate in PEM format.": "Paste the CA certificate in PEM format.",
+  "TLS Verification": "TLS Verification",
   "Skip to main content": "Перейти к основному содержимому",
   "Sort by": "Сортировать по",
   "Source": "Источник",
diff --git a/i18n/locales/tr-TR.json b/i18n/locales/tr-TR.json
index 63c0cde..00a71d1 100644
--- a/i18n/locales/tr-TR.json
+++ b/i18n/locales/tr-TR.json
@@ -1066,6 +1066,12 @@
   "Size": "Boyut",
   "Skip": "Atla",
   "Skip TLS verification": "TLS doğrulamasını atla",
+  "Certificate verification is disabled. Only use this for trusted networks.": "Certificate verification is disabled. Only use this for trusted networks.",
+  "Custom CA certificate": "Custom CA certificate",
+  "Custom CA certificate is required": "Custom CA certificate is required",
+  "Default certificate verification": "Default certificate verification",
+  "Paste the CA certificate in PEM format.": "Paste the CA certificate in PEM format.",
+  "TLS Verification": "TLS Verification",
   "Skip to main content": "Ana içeriğe geç",
   "Sort by": "Göre sırala",
   "Source": "Kaynak",
diff --git a/i18n/locales/vi-VN.json b/i18n/locales/vi-VN.json
index 5e0162e..b809084 100644
--- a/i18n/locales/vi-VN.json
+++ b/i18n/locales/vi-VN.json
@@ -1066,6 +1066,12 @@
   "Size": "Kích thước",
   "Skip": "Bỏ qua",
   "Skip TLS verification": "Bỏ qua xác minh TLS",
+  "Certificate verification is disabled. Only use this for trusted networks.": "Certificate verification is disabled. Only use this for trusted networks.",
+  "Custom CA certificate": "Custom CA certificate",
+  "Custom CA certificate is required": "Custom CA certificate is required",
+  "Default certificate verification": "Default certificate verification",
+  "Paste the CA certificate in PEM format.": "Paste the CA certificate in PEM format.",
+  "TLS Verification": "TLS Verification",
   "Skip to main content": "Chuyển đến nội dung chính",
   "Sort by": "Sắp xếp theo",
   "Source": "Nguồn",
diff --git a/i18n/locales/zh-CN.json b/i18n/locales/zh-CN.json
index 094f9ea..9c89738 100644
--- a/i18n/locales/zh-CN.json
+++ b/i18n/locales/zh-CN.json
@@ -1061,6 +1061,12 @@
   "Size": "大小",
   "Skip": "跳过",
   "Skip TLS verification": "跳过 TLS 校验",
+  "Certificate verification is disabled. Only use this for trusted networks.": "证书校验已禁用。仅可在可信网络中使用。",
+  "Custom CA certificate": "自定义 CA 证书",
+  "Custom CA certificate is required": "必须填写自定义 CA 证书",
+  "Default certificate verification": "默认证书校验",
+  "Paste the CA certificate in PEM format.": "请粘贴 PEM 格式的 CA 证书。",
+  "TLS Verification": "TLS 校验",
   "Skip to main content": "跳到主要内容",
   "Sort by": "排序方式",
   "Source": "来源",
diff --git a/lib/bucket-replication-tls.ts b/lib/bucket-replication-tls.ts
new file mode 100644
index 0000000..37ac6a8
--- /dev/null
+++ b/lib/bucket-replication-tls.ts
@@ -0,0 +1,26 @@
+export type BucketReplicationTlsMode = "verify" | "custom-ca" | "skip"
+
+export interface BucketReplicationTlsPayload {
+  skipTlsVerify: boolean
+  caCertPem: string
+}
+
+export function buildBucketReplicationTlsPayload(
+  secure: boolean,
+  mode: BucketReplicationTlsMode,
+  caCertPem: string,
+): BucketReplicationTlsPayload {
+  if (!secure) {
+    return { skipTlsVerify: false, caCertPem: "" }
+  }
+
+  if (mode === "skip") {
+    return { skipTlsVerify: true, caCertPem: "" }
+  }
+
+  if (mode === "custom-ca") {
+    return { skipTlsVerify: false, caCertPem: caCertPem.trim() }
+  }
+
+  return { skipTlsVerify: false, caCertPem: "" }
+}
diff --git a/tests/lib/bucket-replication-tls.test.js b/tests/lib/bucket-replication-tls.test.js
new file mode 100644
index 0000000..877ea50
--- /dev/null
+++ b/tests/lib/bucket-replication-tls.test.js
@@ -0,0 +1,46 @@
+import assert from "node:assert/strict"
+import test from "node:test"
+import { readFile } from "node:fs/promises"
+
+const loadTlsHelpers = () => import(new URL("../../lib/bucket-replication-tls.ts", import.meta.url).href)
+
+test("bucket replication TLS payload defaults to certificate verification", async () => {
+  const { buildBucketReplicationTlsPayload } = await loadTlsHelpers()
+
+  assert.deepEqual(buildBucketReplicationTlsPayload(true, "verify", "unused"), {
+    skipTlsVerify: false,
+    caCertPem: "",
+  })
+})
+
+test("bucket replication TLS payload enables exactly one custom trust mode", async () => {
+  const { buildBucketReplicationTlsPayload } = await loadTlsHelpers()
+
+  assert.deepEqual(buildBucketReplicationTlsPayload(true, "skip", "unused"), {
+    skipTlsVerify: true,
+    caCertPem: "",
+  })
+  assert.deepEqual(buildBucketReplicationTlsPayload(true, "custom-ca", "  certificate pem  "), {
+    skipTlsVerify: false,
+    caCertPem: "certificate pem",
+  })
+})
+
+test("bucket replication TLS payload clears TLS-only settings for HTTP targets", async () => {
+  const { buildBucketReplicationTlsPayload } = await loadTlsHelpers()
+
+  assert.deepEqual(buildBucketReplicationTlsPayload(false, "skip", "certificate pem"), {
+    skipTlsVerify: false,
+    caCertPem: "",
+  })
+})
+
+test("bucket replication form submits custom TLS fields and exposes accessible validation", async () => {
+  const source = await readFile(new URL("../../components/replication/new-form.tsx", import.meta.url), "utf8")
+
+  assert.match(source, /buildBucketReplicationTlsPayload/)
+  assert.match(source, /skipTlsVerify/)
+  assert.match(source, /caCertPem/)
+  assert.match(source, /replication-ca-certificate-error/)
+  assert.match(source, /role="alert"/)
+})