diff --git a/app/(dashboard)/support-tickets/[id]/page.tsx b/app/(dashboard)/support-tickets/[id]/page.tsx
index f42fa89..7c646ad 100644
--- a/app/(dashboard)/support-tickets/[id]/page.tsx
+++ b/app/(dashboard)/support-tickets/[id]/page.tsx
@@ -7,6 +7,7 @@ import PageNavbar from '@/components/layouts/PageNavbar'
 import Button from '@/components/formElements/Button'
 import Input from '@/components/formElements/Input'
 import { APP_ROUTES } from '@/constants/routes'
+import useAlertModal from '@/hooks/useAlertModal'
 import { addToast } from '@/lib/toast'
 import { formatIranianMobile, formatPersianDate } from '@/lib/formatters'
 import {
@@ -21,6 +22,7 @@ import {
 
 const AdminSupportTicketDetail = () => {
   const { id } = useParams<{ id: string }>()
+  const { showAlert } = useAlertModal()
   const [ticket, setTicket] = useState<SupportTicket | null>(null)
   const [reply, setReply] = useState('')
   const [pending, setPending] = useState(false)
@@ -56,6 +58,17 @@ const AdminSupportTicketDetail = () => {
     }
   }
 
+  const confirmClose = () => {
+    showAlert(
+      'این تیکت بسته شود؟ کاربر دیگر نمی‌تواند پیام بفرستد و در صورت بستن توسط ادمین، خودش نمی‌تواند دوباره باز کند.',
+      () => {
+        void changeStatus('closed')
+      },
+      undefined,
+      { dangerAccept: true }
+    )
+  }
+
   return (
     <section className="h-full w-full text-right">
       <PageNavbar pageTitle={ticket?.subject ?? 'جزئیات تیکت'} />
@@ -104,6 +117,24 @@ const AdminSupportTicketDetail = () => {
                   </select>
                 </label>
               </div>
+              {ticket.status !== 'closed' ? (
+                <div className="mt-4 flex justify-end">
+                  <Button
+                    color="danger"
+                    size="sm"
+                    variant="flat"
+                    onClick={confirmClose}
+                  >
+                    بستن تیکت
+                  </Button>
+                </div>
+              ) : (
+                <p className="mt-4 text-sm text-text-muted">
+                  {ticket.closedBy === 'user'
+                    ? 'این تیکت توسط کاربر بسته شده است.'
+                    : 'این تیکت توسط پشتیبانی بسته شده است؛ کاربر نمی‌تواند دوباره باز کند.'}
+                </p>
+              )}
             </div>
             <div className="space-y-3 rounded-2xl border border-default-200 bg-white p-5">
               {ticket.messages.map((message) => (
@@ -129,7 +160,10 @@ const AdminSupportTicketDetail = () => {
                     setReply(String(value))
                   }}
                 />
-                <p className="my-3 text-xs text-text-muted">پس از ثبت پاسخ، برای کاربر پیامک اطلاع‌رسانی ارسال می‌شود.</p>
+                <p className="my-3 text-xs text-text-muted">
+                  می‌توانید چند پیام پشت‌سرهم بفرستید. کاربر فقط بعد از پاسخ شما یک پیام می‌تواند بفرستد. پس از ثبت پاسخ، برای کاربر پیامک
+                  اطلاع‌رسانی ارسال می‌شود.
+                </p>
                 <Button
                   isLoading={pending}
                   onClick={() => void send()}
diff --git a/openapi.json b/openapi.json
index 3ef2447..a7abbd2 100644
--- a/openapi.json
+++ b/openapi.json
@@ -16112,6 +16112,7 @@
     },
     "/api/v1/support-tickets/{id}/replies": {
       "post": {
+        "description": "Allowed only while status is waiting_user (after a support reply). One consumer message returns the ticket to waiting_admin.",
         "operationId": "SupportTicketsController_reply",
         "parameters": [
           {
@@ -16154,6 +16155,41 @@
         "tags": ["Support Tickets"]
       }
     },
+    "/api/v1/support-tickets/{id}/close": {
+      "post": {
+        "description": "Consumers may close their own open tickets. Admin-closed tickets stay closed and cannot be reopened by the consumer.",
+        "operationId": "SupportTicketsController_close",
+        "parameters": [
+          {
+            "name": "id",
+            "required": true,
+            "in": "path",
+            "schema": {
+              "type": "string"
+            }
+          }
+        ],
+        "responses": {
+          "201": {
+            "description": "",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/SupportTicketSummaryResponseDto"
+                }
+              }
+            }
+          }
+        },
+        "security": [
+          {
+            "JWT-auth": []
+          }
+        ],
+        "summary": "Close my support ticket",
+        "tags": ["Support Tickets"]
+      }
+    },
     "/api/v1/admin/support-tickets": {
       "get": {
         "operationId": "AdminSupportTicketsController_list",
@@ -28493,6 +28529,12 @@
             "format": "date-time",
             "nullable": true
           },
+          "closedBy": {
+            "type": "string",
+            "enum": ["user", "admin"],
+            "nullable": true,
+            "description": "Who closed the ticket. Consumers cannot reopen admin-closed tickets."
+          },
           "createdAt": {
             "type": "string",
             "format": "date-time"
@@ -28544,6 +28586,12 @@
             "format": "date-time",
             "nullable": true
           },
+          "closedBy": {
+            "type": "string",
+            "enum": ["user", "admin"],
+            "nullable": true,
+            "description": "Who closed the ticket. Consumers cannot reopen admin-closed tickets."
+          },
           "createdAt": {
             "type": "string",
             "format": "date-time"
diff --git a/services/supportTickets.ts b/services/supportTickets.ts
index 106a72e..7a1a855 100644
--- a/services/supportTickets.ts
+++ b/services/supportTickets.ts
@@ -19,6 +19,7 @@ export interface SupportTicket {
   status: string
   lastMessageAt: string
   closedAt: string | null
+  closedBy?: 'user' | 'admin' | null
   createdAt: string
   user: { mobile: string; displayName: string | null }
   messages: SupportTicketMessage[]