diff --git a/src/renderer/features/tasks/components/issue-selector/inline-issue-selector.tsx b/src/renderer/features/tasks/components/issue-selector/inline-issue-selector.tsx
index f1288d6d9..a89ba6a83 100644
--- a/src/renderer/features/tasks/components/issue-selector/inline-issue-selector.tsx
+++ b/src/renderer/features/tasks/components/issue-selector/inline-issue-selector.tsx
@@ -1,4 +1,5 @@
 import { Check, Loader2 } from 'lucide-react';
+import { observer } from 'mobx-react-lite';
 import { useCallback, useEffect, useRef, useState } from 'react';
 import type { Issue } from '@shared/tasks';
 import {
@@ -10,6 +11,7 @@ import { Select, SelectContent, SelectItem, SelectTrigger } from '@renderer/lib/
 import { ShortcutHint } from '@renderer/lib/ui/shortcut-hint';
 import { cn } from '@renderer/utils/utils';
 import { ConnectIssueIntegrationPlaceholder, IssueRow, ProviderLogo } from './issue-selector';
+import { getLinkedIssueMap } from './use-linked-issue-urls';
 import { useIssueSearch } from './useIssueSearch';
 
 export interface InlineIssueSelectorProps {
@@ -19,16 +21,20 @@ export interface InlineIssueSelectorProps {
   repositoryUrl?: string;
   projectPath?: string;
   disabled?: boolean;
+  /** Skip "already linked" indicator for this task — useful when re-selecting the same task's issue. */
+  excludeTaskId?: string;
 }
 
-export function InlineIssueSelector({
+export const InlineIssueSelector = observer(function InlineIssueSelector({
   value,
   onValueChange,
   projectId,
   repositoryUrl = '',
   projectPath = '',
   disabled,
+  excludeTaskId,
 }: InlineIssueSelectorProps) {
+  const linkedIssueMap = getLinkedIssueMap(projectId, excludeTaskId);
   const {
     issues,
     issueProvider,
@@ -90,7 +96,8 @@ export function InlineIssueSelector({
         case 'Enter': {
           e.preventDefault();
           const issue = issues[highlightedIndex];
-          if (issue) onValueChange(issue === value ? null : issue);
+          if (!issue) break;
+          onValueChange(issue === value ? null : issue);
           break;
         }
         case 'Escape':
@@ -170,6 +177,7 @@ export function InlineIssueSelector({
           issues.map((issue, index) => {
             const isSelected = value?.identifier === issue.identifier;
             const isHighlighted = index === highlightedIndex;
+            const linkedTo = linkedIssueMap.get(issue.url);
             return (
               <button
                 key={issue.identifier}
@@ -182,7 +190,7 @@ export function InlineIssueSelector({
                 onMouseEnter={() => setHighlightedIndex(index)}
                 onClick={() => onValueChange(isSelected ? null : issue)}
               >
-                <IssueRow issue={issue} />
+                <IssueRow issue={issue} linkedTo={linkedTo} />
                 {isSelected && (
                   <Check className="absolute right-2 size-3.5 shrink-0 text-foreground-muted" />
                 )}
@@ -201,4 +209,4 @@ export function InlineIssueSelector({
       </div>
     </div>
   );
-}
+});
diff --git a/src/renderer/features/tasks/components/issue-selector/issue-selector.tsx b/src/renderer/features/tasks/components/issue-selector/issue-selector.tsx
index 17bee4271..49fd5e689 100644
--- a/src/renderer/features/tasks/components/issue-selector/issue-selector.tsx
+++ b/src/renderer/features/tasks/components/issue-selector/issue-selector.tsx
@@ -1,4 +1,5 @@
-import { ExternalLink, Loader2 } from 'lucide-react';
+import { ExternalLink, Link2, Loader2 } from 'lucide-react';
+import { observer } from 'mobx-react-lite';
 import { forwardRef, useCallback, useRef, useState } from 'react';
 import type { Issue } from '@shared/tasks';
 import {
@@ -22,6 +23,7 @@ import {
 import { Select, SelectContent, SelectItem, SelectTrigger } from '@renderer/lib/ui/select';
 import { Tooltip, TooltipContent, TooltipTrigger } from '@renderer/lib/ui/tooltip';
 import { cn } from '@renderer/utils/utils';
+import { getLinkedIssueMap, type LinkedIssueInfo } from './use-linked-issue-urls';
 import { useIssueSearch } from './useIssueSearch';
 
 function getStatusColorClass(status?: string) {
@@ -75,7 +77,22 @@ export function ProviderLogo({
   return <img src={src} alt={alt} className={className ?? 'h-3.5 w-3.5'} />;
 }
 
-export function IssueRow({ issue }: { issue: Issue }) {
+export function LinkedIssueIndicator({ linkedTo }: { linkedTo: LinkedIssueInfo }) {
+  return (
+    <Tooltip>
+      <TooltipTrigger
+        render={
+          <span className="ml-auto flex shrink-0 items-center text-foreground-muted">
+            <Link2 className="size-3.5" />
+          </span>
+        }
+      />
+      <TooltipContent>Already linked to task: {linkedTo.taskName}</TooltipContent>
+    </Tooltip>
+  );
+}
+
+export function IssueRow({ issue, linkedTo }: { issue: Issue; linkedTo?: LinkedIssueInfo }) {
   return (
     <span className="flex min-w-0 items-center gap-2 w-full">
       <Tooltip>
@@ -84,6 +101,7 @@ export function IssueRow({ issue }: { issue: Issue }) {
       </Tooltip>
       <IssueIdentifier identifier={issue.identifier} />
       {issue.title ? <span className="truncate text-foreground">{issue.title}</span> : null}
+      {linkedTo ? <LinkedIssueIndicator linkedTo={linkedTo} /> : null}
     </span>
   );
 }
@@ -94,15 +112,19 @@ export interface IssueSelectorProps {
   projectId?: string;
   repositoryUrl: string;
   projectPath?: string;
+  /** Skip "already linked" indicator for this task — useful when re-selecting the same task's issue. */
+  excludeTaskId?: string;
 }
 
-export function IssueSelector({
+export const IssueSelector = observer(function IssueSelector({
   projectId,
   repositoryUrl,
   projectPath = '',
   value,
   onValueChange,
+  excludeTaskId,
 }: IssueSelectorProps) {
+  const linkedIssueMap = getLinkedIssueMap(projectId, excludeTaskId);
   const {
     issues,
     issueProvider,
@@ -225,11 +247,14 @@ export function IssueSelector({
               <span className="text-muted-foreground">No issues found</span>
             </ComboboxEmpty>
             <ComboboxList>
-              {(issue: Issue) => (
-                <ComboboxItem key={issue.identifier} value={issue} className="pr-2">
-                  <IssueRow issue={issue} />
-                </ComboboxItem>
-              )}
+              {(issue: Issue) => {
+                const linkedTo = linkedIssueMap.get(issue.url);
+                return (
+                  <ComboboxItem key={issue.identifier} value={issue} className="pr-2">
+                    <IssueRow issue={issue} linkedTo={linkedTo} />
+                  </ComboboxItem>
+                );
+              }}
             </ComboboxList>
           </ComboboxContent>
         </Combobox>
@@ -238,7 +263,7 @@ export function IssueSelector({
       )}
     </div>
   );
-}
+});
 
 export function SelectedIssueValue({ issue }: { issue: Issue }) {
   return (
diff --git a/src/renderer/features/tasks/components/issue-selector/use-linked-issue-urls.ts b/src/renderer/features/tasks/components/issue-selector/use-linked-issue-urls.ts
new file mode 100644
index 000000000..a6a12e0d8
--- /dev/null
+++ b/src/renderer/features/tasks/components/issue-selector/use-linked-issue-urls.ts
@@ -0,0 +1,28 @@
+import { isRegistered } from '@renderer/features/tasks/stores/task';
+import { getTaskManagerStore } from '@renderer/features/tasks/stores/task-selectors';
+
+export type LinkedIssueInfo = { taskId: string; taskName: string };
+
+/**
+ * Reads from observable task state — call only inside `observer` components.
+ * Returns a map from issue URL → linked task info for non-archived tasks,
+ * optionally excluding a single task (e.g. when re-selecting the same task's issue).
+ */
+export function getLinkedIssueMap(
+  projectId: string | undefined,
+  excludeTaskId?: string
+): Map<string, LinkedIssueInfo> {
+  const map = new Map<string, LinkedIssueInfo>();
+  if (!projectId) return map;
+  const taskManager = getTaskManagerStore(projectId);
+  if (!taskManager) return map;
+  for (const store of taskManager.tasks.values()) {
+    if (!isRegistered(store)) continue;
+    if (excludeTaskId && store.data.id === excludeTaskId) continue;
+    if (store.data.archivedAt) continue;
+    const url = store.data.linkedIssue?.url;
+    if (!url || map.has(url)) continue;
+    map.set(url, { taskId: store.data.id, taskName: store.data.name });
+  }
+  return map;
+}
diff --git a/src/renderer/features/tasks/task-titlebar.tsx b/src/renderer/features/tasks/task-titlebar.tsx
index d4f6515c4..543e30e5d 100644
--- a/src/renderer/features/tasks/task-titlebar.tsx
+++ b/src/renderer/features/tasks/task-titlebar.tsx
@@ -13,6 +13,7 @@ import {
   Terminal,
 } from 'lucide-react';
 import { observer } from 'mobx-react-lite';
+import type { Issue } from '@shared/tasks';
 import {
   asMounted,
   getProjectStore,
@@ -30,6 +31,7 @@ import { ConnectionStatusDot } from '@renderer/lib/components/connection-status-
 import { OpenInMenu } from '@renderer/lib/components/titlebar/open-in-menu';
 import { Titlebar } from '@renderer/lib/components/titlebar/Titlebar';
 import { useDelayedBoolean } from '@renderer/lib/hooks/use-delay-boolean';
+import { rpc } from '@renderer/lib/ipc';
 import { Badge } from '@renderer/lib/ui/badge';
 import { Button } from '@renderer/lib/ui/button';
 import { MicroLabel } from '@renderer/lib/ui/label';
@@ -39,7 +41,7 @@ import { ToggleGroup, ToggleGroupItem } from '@renderer/lib/ui/toggle-group';
 import { Tooltip, TooltipContent, TooltipTrigger } from '@renderer/lib/ui/tooltip';
 import { cn } from '@renderer/utils/utils';
 import { DevServerPills } from './components/dev-server-pills';
-import { IssueSelector } from './components/issue-selector/issue-selector';
+import { IssueSelector, ProviderLogo } from './components/issue-selector/issue-selector';
 import { useTaskViewNavigation } from './hooks/use-task-view-navigation';
 import { useTaskViewShortcuts } from './hooks/use-task-view-shortcuts';
 import { useGitActions } from './use-git-actions';
@@ -262,9 +264,11 @@ const ActiveTaskTitlebar = observer(function ActiveTaskTitlebar({
                 projectId={projectId}
                 repositoryUrl={provisionedTask.repositoryStore.repositoryUrl ?? ''}
                 projectPath={provisionedTask.path}
+                excludeTaskId={taskId}
               />
             </PopoverContent>
           </Popover>
+          {taskPayload.linkedIssue ? <LinkedIssueBadge issue={taskPayload.linkedIssue} /> : null}
           <button
             className={cn(
               'text-foreground-muted ml-1',
@@ -376,3 +380,26 @@ const ActiveTaskTitlebar = observer(function ActiveTaskTitlebar({
     />
   );
 });
+
+function LinkedIssueBadge({ issue }: { issue: Issue }) {
+  return (
+    <Tooltip>
+      <TooltipTrigger
+        render={
+          <button
+            type="button"
+            disabled={!issue.url}
+            onClick={() => {
+              if (issue.url) void rpc.app.openExternal(issue.url);
+            }}
+            className="flex items-center gap-1 rounded-md border border-border px-1.5 py-0.5 text-xs text-foreground-muted hover:bg-muted/30 disabled:cursor-default disabled:opacity-60"
+          >
+            <ProviderLogo provider={issue.provider} className="h-3 w-3" />
+            <span className="font-mono">{issue.identifier}</span>
+          </button>
+        }
+      />
+      <TooltipContent>{issue.title || issue.identifier}</TooltipContent>
+    </Tooltip>
+  );
+}