diff --git a/src/components/like-button.tsx b/src/components/like-button.tsx
index 93a8ac7..0bdf6f9 100644
--- a/src/components/like-button.tsx
+++ b/src/components/like-button.tsx
@@ -20,6 +20,7 @@ interface LikeButtonProps {
   subjectCid: string
   initialCount: number
   size?: 'sm' | 'md'
+  disabled?: boolean
   className?: string
 }
 
@@ -28,6 +29,7 @@ export function LikeButton({
   subjectCid,
   initialCount,
   size = 'md',
+  disabled = false,
   className,
 }: LikeButtonProps) {
   const { user, isAuthenticated, getAccessToken } = useAuth()
@@ -121,7 +123,7 @@ export function LikeButton({
       type="button"
       aria-pressed={liked}
       aria-label={`${formatCompactNumber(count)} reactions`}
-      disabled={!isAuthenticated}
+      disabled={disabled || !isAuthenticated}
       onClick={handleToggle}
       className={cn(
         'inline-flex items-center gap-1.5 transition-colors',
diff --git a/src/components/reply-branch.tsx b/src/components/reply-branch.tsx
index 0e6ef91..dc1e237 100644
--- a/src/components/reply-branch.tsx
+++ b/src/components/reply-branch.tsx
@@ -160,6 +160,7 @@ export function ReplyBranch({
                   onReply={onReply}
                   canEdit={currentUserDid ? node.reply.authorDid === currentUserDid : false}
                   canDelete={currentUserDid ? node.reply.authorDid === currentUserDid : false}
+                  isOwnContent={currentUserDid ? node.reply.authorDid === currentUserDid : false}
                   onDelete={onDeleteReply}
                 />
               </div>
diff --git a/src/components/reply-card.tsx b/src/components/reply-card.tsx
index 7d7a033..7813fe9 100644
--- a/src/components/reply-card.tsx
+++ b/src/components/reply-card.tsx
@@ -43,6 +43,7 @@ interface ReplyCardProps {
   onDelete?: () => void
   canReport?: boolean
   onReport?: (report: ReportSubmission) => void
+  isOwnContent?: boolean
   selfLabels?: string[]
   className?: string
 }
@@ -58,6 +59,7 @@ export function ReplyCard({
   onDelete,
   canReport,
   onReport,
+  isOwnContent,
   selfLabels,
   className,
 }: ReplyCardProps) {
@@ -256,13 +258,18 @@ export function ReplyCard({
         {/* Footer */}
         <div className="flex items-center gap-3 border-t border-border px-4 py-2 text-xs text-muted-foreground">
           {reactions && onReactionToggle && (
-            <ReactionBar reactions={reactions} onToggle={onReactionToggle} />
+            <ReactionBar
+              reactions={reactions}
+              onToggle={onReactionToggle}
+              disabled={isOwnContent}
+            />
           )}
           <LikeButton
             subjectUri={reply.uri}
             subjectCid={reply.cid}
             initialCount={reply.reactionCount}
             size="sm"
+            disabled={isOwnContent}
           />
           <span className="flex items-center gap-1">
             <Clock className="h-3.5 w-3.5" weight="regular" aria-hidden="true" />
diff --git a/src/components/topic-detail-client.tsx b/src/components/topic-detail-client.tsx
index 877d46d..135ca2b 100644
--- a/src/components/topic-detail-client.tsx
+++ b/src/components/topic-detail-client.tsx
@@ -146,6 +146,7 @@ export function TopicDetailClient({ topic, replies }: TopicDetailClientProps) {
           topic={topic}
           canEdit={canEdit}
           onEdit={handleEdit}
+          isOwnContent={canEdit}
           isModerator={isModerator}
           isAdmin={isAdmin}
           isPinned={topic.isPinned}
diff --git a/src/components/topic-view.tsx b/src/components/topic-view.tsx
index dfa6839..72c4ba8 100644
--- a/src/components/topic-view.tsx
+++ b/src/components/topic-view.tsx
@@ -48,6 +48,7 @@ interface TopicViewProps {
   onReply?: () => void
   canReport?: boolean
   onReport?: (report: ReportSubmission) => void
+  isOwnContent?: boolean
   selfLabels?: string[]
   className?: string
 }
@@ -66,6 +67,7 @@ export function TopicView({
   onReply,
   canReport,
   onReport,
+  isOwnContent,
   selfLabels,
   className,
 }: TopicViewProps) {
@@ -196,12 +198,13 @@ export function TopicView({
       {/* Footer: read signals left, actions right */}
       <div className="flex items-center gap-4 border-t border-border px-4 py-3 text-sm text-muted-foreground sm:px-6">
         {reactions && onReactionToggle && (
-          <ReactionBar reactions={reactions} onToggle={onReactionToggle} />
+          <ReactionBar reactions={reactions} onToggle={onReactionToggle} disabled={isOwnContent} />
         )}
         <LikeButton
           subjectUri={topic.uri}
           subjectCid={topic.cid}
           initialCount={topic.reactionCount}
+          disabled={isOwnContent}
         />
         <span className="flex items-center gap-1.5">
           <Clock className="h-4 w-4" weight="regular" aria-hidden="true" />