diff --git a/desktop/src/features/sidebar/ui/AppSidebar.tsx b/desktop/src/features/sidebar/ui/AppSidebar.tsx
index 638eed2ad..4076bc1e1 100644
--- a/desktop/src/features/sidebar/ui/AppSidebar.tsx
+++ b/desktop/src/features/sidebar/ui/AppSidebar.tsx
@@ -28,6 +28,7 @@ import {
   CreateSectionDialog,
   DeleteSectionAlertDialog,
   RenameSectionDialog,
+  useLeaveChannelDialog,
 } from "@/features/sidebar/ui/ChannelSectionDialogs";
 import { MoreUnreadButton } from "@/features/sidebar/ui/MoreUnreadButton";
 import { SidebarSection } from "@/features/sidebar/ui/SidebarSection";
@@ -388,6 +389,8 @@ export function AppSidebar({
     React.useState<ChannelSection | null>(null);
   const [deleteSectionTarget, setDeleteSectionTarget] =
     React.useState<ChannelSection | null>(null);
+  const { requestLeaveChannel, dialog: leaveChannelDialog } =
+    useLeaveChannelDialog();
 
   const sectionIds = React.useMemo(
     () => channelSections.map((s) => s.id),
@@ -682,6 +685,7 @@ export function AppSidebar({
                   starredChannelIds={starredChannelIds}
                   onStarChannel={onStarChannel}
                   onUnstarChannel={onUnstarChannel}
+                  onLeaveChannel={requestLeaveChannel}
                 />
               ) : null}
               <SidebarDndContext
@@ -735,6 +739,7 @@ export function AppSidebar({
                     starredChannelIds={starredChannelIds}
                     onStarChannel={onStarChannel}
                     onUnstarChannel={onUnstarChannel}
+                    onLeaveChannel={requestLeaveChannel}
                   />
                 ))}
                 <ChannelGroupSection
@@ -768,6 +773,7 @@ export function AppSidebar({
                   starredChannelIds={starredChannelIds}
                   onStarChannel={onStarChannel}
                   onUnstarChannel={onUnstarChannel}
+                  onLeaveChannel={requestLeaveChannel}
                 />
               </SidebarDndContext>
               <FeatureGate feature="forum">
@@ -981,6 +987,7 @@ export function AppSidebar({
           setDeleteSectionTarget(null);
         }}
       />
+      {leaveChannelDialog}
       <SidebarRail />
     </Sidebar>
   );
diff --git a/desktop/src/features/sidebar/ui/ChannelSectionDialogs.tsx b/desktop/src/features/sidebar/ui/ChannelSectionDialogs.tsx
index c25f14ddf..f94867302 100644
--- a/desktop/src/features/sidebar/ui/ChannelSectionDialogs.tsx
+++ b/desktop/src/features/sidebar/ui/ChannelSectionDialogs.tsx
@@ -20,6 +20,8 @@ import {
   DialogTitle,
 } from "@/shared/ui/dialog";
 import { Input } from "@/shared/ui/input";
+import type { Channel } from "@/shared/api/types";
+import { useLeaveChannelMutation } from "@/features/channels/hooks";
 
 // ---------------------------------------------------------------------------
 // SectionNameDialog (internal)
@@ -208,3 +210,70 @@ export function DeleteSectionAlertDialog({
     </AlertDialog>
   );
 }
+
+// ---------------------------------------------------------------------------
+// LeaveChannelAlertDialog
+// ---------------------------------------------------------------------------
+
+export type LeaveChannelAlertDialogProps = {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  channelName: string;
+  onConfirm: () => void;
+};
+
+export function LeaveChannelAlertDialog({
+  open,
+  onOpenChange,
+  channelName,
+  onConfirm,
+}: LeaveChannelAlertDialogProps) {
+  return (
+    <AlertDialog open={open} onOpenChange={onOpenChange}>
+      <AlertDialogContent>
+        <AlertDialogHeader>
+          <AlertDialogTitle>Leave channel</AlertDialogTitle>
+          <AlertDialogDescription>
+            {`Leave "${channelName}"? You'll stop receiving its messages and can rejoin later.`}
+          </AlertDialogDescription>
+        </AlertDialogHeader>
+        <AlertDialogFooter>
+          <AlertDialogCancel>Cancel</AlertDialogCancel>
+          <AlertDialogAction
+            className="bg-destructive text-destructive-foreground hover:bg-destructive/90"
+            onClick={onConfirm}
+          >
+            Leave
+          </AlertDialogAction>
+        </AlertDialogFooter>
+      </AlertDialogContent>
+    </AlertDialog>
+  );
+}
+
+// ---------------------------------------------------------------------------
+// useLeaveChannelDialog — owns leave-channel state, mutation, and dialog
+// ---------------------------------------------------------------------------
+
+export function useLeaveChannelDialog() {
+  const [target, setTarget] = React.useState<Channel | null>(null);
+  const leaveChannel = useLeaveChannelMutation(target?.id ?? null);
+
+  const dialog = (
+    <LeaveChannelAlertDialog
+      open={target !== null}
+      onOpenChange={(open) => {
+        if (!open) setTarget(null);
+      }}
+      channelName={target?.name ?? ""}
+      onConfirm={() => {
+        if (target) {
+          leaveChannel.mutate();
+        }
+        setTarget(null);
+      }}
+    />
+  );
+
+  return { requestLeaveChannel: setTarget, dialog };
+}
diff --git a/desktop/src/features/sidebar/ui/CustomChannelSection.tsx b/desktop/src/features/sidebar/ui/CustomChannelSection.tsx
index f4a0add50..7abb40a25 100644
--- a/desktop/src/features/sidebar/ui/CustomChannelSection.tsx
+++ b/desktop/src/features/sidebar/ui/CustomChannelSection.tsx
@@ -8,7 +8,10 @@ import {
   CheckCircle2,
   ChevronDown,
   CircleDot,
+  Clipboard,
+  Copy,
   GripVertical,
+  LogOut,
   Pencil,
   Plus,
   Star,
@@ -16,6 +19,8 @@ import {
   Trash2,
 } from "lucide-react";
 
+import { toast } from "sonner";
+
 import {
   ContextMenu,
   ContextMenuContent,
@@ -117,6 +122,17 @@ function MoveToSectionSubmenu({
 // ChannelContextMenuItems — shared context menu items for channel rows
 // ---------------------------------------------------------------------------
 
+function copyToClipboard(text: string, successMessage: string) {
+  void navigator.clipboard
+    .writeText(text)
+    .then(() => {
+      toast.success(successMessage);
+    })
+    .catch(() => {
+      toast.error("Failed to copy to clipboard");
+    });
+}
+
 export function ChannelContextMenuItems({
   channel,
   hasUnread,
@@ -133,6 +149,7 @@ export function ChannelContextMenuItems({
   onAssignChannel,
   onUnassignChannel,
   onCreateSectionForChannel,
+  onLeaveChannel,
 }: {
   channel: Channel;
   hasUnread: boolean;
@@ -152,6 +169,7 @@ export function ChannelContextMenuItems({
   onAssignChannel?: (channelId: string, sectionId: string) => void;
   onUnassignChannel?: (channelId: string) => void;
   onCreateSectionForChannel?: (channelId: string) => void;
+  onLeaveChannel?: (channel: Channel) => void;
 }) {
   const showStar = Boolean(onStarChannel && onUnstarChannel);
   const showReadToggle = hasUnread
@@ -219,6 +237,35 @@ export function ChannelContextMenuItems({
           />
         </>
       ) : null}
+      <ContextMenuSeparator />
+      <ContextMenuItem
+        onClick={() =>
+          copyToClipboard(channel.name, "Channel name copied to clipboard")
+        }
+      >
+        <Copy className="h-4 w-4" />
+        Copy channel name
+      </ContextMenuItem>
+      <ContextMenuItem
+        onClick={() =>
+          copyToClipboard(channel.id, "Channel ID copied to clipboard")
+        }
+      >
+        <Clipboard className="h-4 w-4" />
+        Copy channel ID
+      </ContextMenuItem>
+      {onLeaveChannel ? (
+        <>
+          <ContextMenuSeparator />
+          <ContextMenuItem
+            className="text-destructive focus:text-destructive"
+            onClick={() => onLeaveChannel(channel)}
+          >
+            <LogOut className="h-4 w-4" />
+            Leave channel
+          </ContextMenuItem>
+        </>
+      ) : null}
     </>
   );
 }
@@ -325,6 +372,7 @@ export function ChannelGroupSection({
   starredChannelIds,
   onStarChannel,
   onUnstarChannel,
+  onLeaveChannel,
 }: {
   browseAriaLabel?: string;
   createAriaLabel: string;
@@ -360,6 +408,7 @@ export function ChannelGroupSection({
   starredChannelIds?: ReadonlySet<string>;
   onStarChannel?: (channelId: string) => void;
   onUnstarChannel?: (channelId: string) => void;
+  onLeaveChannel?: (channel: Channel) => void;
 }) {
   const contentId = `sidebar-${listTestId}`;
 
@@ -414,6 +463,7 @@ export function ChannelGroupSection({
                 onAssignChannel={onAssignChannel}
                 onUnassignChannel={onUnassignChannel}
                 onCreateSectionForChannel={onCreateSectionForChannel}
+                onLeaveChannel={onLeaveChannel}
               />
             </ContextMenuContent>
           </ContextMenu>
@@ -422,7 +472,9 @@ export function ChannelGroupSection({
     ) : null;
 
   const sectionContent = (
-    <SidebarGroup className={cn("group/sidebar-section", groupClassName)}>
+    <SidebarGroup
+      className={cn("group/sidebar-section select-none", groupClassName)}
+    >
       <div className="relative">
         <SidebarGroupLabel asChild>
           <button
@@ -500,6 +552,7 @@ export function CustomChannelSection({
   starredChannelIds,
   onStarChannel,
   onUnstarChannel,
+  onLeaveChannel,
 }: {
   section: ChannelSection;
   channels: Channel[];
@@ -534,6 +587,7 @@ export function CustomChannelSection({
   starredChannelIds?: ReadonlySet<string>;
   onStarChannel?: (channelId: string) => void;
   onUnstarChannel?: (channelId: string) => void;
+  onLeaveChannel?: (channel: Channel) => void;
 }) {
   const contentId = `sidebar-section-${section.id}`;
 
@@ -542,7 +596,10 @@ export function CustomChannelSection({
       {({ dragHandleProps, isDragging }) => (
         <DroppableSectionBody sectionId={section.id}>
           <SidebarGroup
-            className={cn("group/sidebar-section", isDragging && "opacity-30")}
+            className={cn(
+              "group/sidebar-section select-none",
+              isDragging && "opacity-30",
+            )}
           >
             <ContextMenu>
               <ContextMenuTrigger asChild>
@@ -684,6 +741,7 @@ export function CustomChannelSection({
                             onCreateSectionForChannel={
                               onCreateSectionForChannel
                             }
+                            onLeaveChannel={onLeaveChannel}
                           />
                         </ContextMenuContent>
                       </ContextMenu>
diff --git a/desktop/src/features/sidebar/ui/SidebarSection.tsx b/desktop/src/features/sidebar/ui/SidebarSection.tsx
index 1ceba1720..e10a97b9e 100644
--- a/desktop/src/features/sidebar/ui/SidebarSection.tsx
+++ b/desktop/src/features/sidebar/ui/SidebarSection.tsx
@@ -321,7 +321,7 @@ export function SidebarSection({
   const canToggle = Boolean(onToggleCollapsed);
 
   return (
-    <SidebarGroup className="group/sidebar-section">
+    <SidebarGroup className="group/sidebar-section select-none">
       <div className="relative">
         <SidebarGroupLabel asChild={canToggle}>
           {canToggle ? (
@@ -405,12 +405,9 @@ export function SidebarSection({
                   </SidebarMenuItem>
                 );
 
-                const hasContextAction =
-                  (unreadChannelIds.has(channel.id) && onMarkChannelRead) ||
-                  (!unreadChannelIds.has(channel.id) && onMarkChannelUnread) ||
-                  (onMuteChannel && onUnmuteChannel);
-
-                return hasContextAction ? (
+                // The shared menu always renders copy actions, so every row
+                // gets a context menu regardless of read/mute availability.
+                return (
                   <ContextMenu key={channel.id}>
                     <ContextMenuTrigger asChild>{menuItem}</ContextMenuTrigger>
                     <ContextMenuContent>
@@ -425,8 +422,6 @@ export function SidebarSection({
                       />
                     </ContextMenuContent>
                   </ContextMenu>
-                ) : (
-                  menuItem
                 );
               })}
             </SidebarMenu>