diff --git a/apps/web/src/components/Sidebar.tsx b/apps/web/src/components/Sidebar.tsx
index d227e3a803..5b4da4655c 100644
--- a/apps/web/src/components/Sidebar.tsx
+++ b/apps/web/src/components/Sidebar.tsx
@@ -267,8 +267,9 @@ interface SidebarThreadRowProps {
   renamingThreadId: ThreadId | null;
   renamingTitle: string;
   setRenamingTitle: (title: string) => void;
-  renamingInputRef: MutableRefObject<HTMLInputElement | null>;
-  renamingCommittedRef: MutableRefObject<boolean>;
+  onRenamingInputMount: (element: HTMLInputElement | null) => void;
+  hasRenameCommitted: () => boolean;
+  markRenameCommitted: () => void;
   confirmingArchiveThreadId: ThreadId | null;
   setConfirmingArchiveThreadId: Dispatch<SetStateAction<ThreadId | null>>;
   confirmArchiveButtonRefs: MutableRefObject<Map<ThreadId, HTMLButtonElement>>;
@@ -400,13 +401,7 @@ function SidebarThreadRow(props: SidebarThreadRowProps) {
           {threadStatus && <ThreadStatusLabel status={threadStatus} />}
           {props.renamingThreadId === thread.id ? (
             <input
-              ref={(element) => {
-                if (element && props.renamingInputRef.current !== element) {
-                  props.renamingInputRef.current = element;
-                  element.focus();
-                  element.select();
-                }
-              }}
+              ref={props.onRenamingInputMount}
               className="min-w-0 flex-1 truncate text-xs bg-transparent outline-none border border-ring rounded px-0.5"
               value={props.renamingTitle}
               onChange={(event) => props.setRenamingTitle(event.target.value)}
@@ -414,16 +409,16 @@ function SidebarThreadRow(props: SidebarThreadRowProps) {
                 event.stopPropagation();
                 if (event.key === "Enter") {
                   event.preventDefault();
-                  props.renamingCommittedRef.current = true;
+                  props.markRenameCommitted();
                   void props.commitRename(thread.id, props.renamingTitle, thread.title);
                 } else if (event.key === "Escape") {
                   event.preventDefault();
-                  props.renamingCommittedRef.current = true;
+                  props.markRenameCommitted();
                   props.cancelRename();
                 }
               }}
               onBlur={() => {
-                if (!props.renamingCommittedRef.current) {
+                if (!props.hasRenameCommitted()) {
                   void props.commitRename(thread.id, props.renamingTitle, thread.title);
                 }
               }}
@@ -718,6 +713,8 @@ export default function Sidebar() {
   const [isAddingProject, setIsAddingProject] = useState(false);
   const [addProjectError, setAddProjectError] = useState<string | null>(null);
   const addProjectInputRef = useRef<HTMLInputElement | null>(null);
+  const [renamingProjectId, setRenamingProjectId] = useState<ProjectId | null>(null);
+  const [renamingProjectTitle, setRenamingProjectTitle] = useState("");
   const [renamingThreadId, setRenamingThreadId] = useState<ThreadId | null>(null);
   const [renamingTitle, setRenamingTitle] = useState("");
   const [confirmingArchiveThreadId, setConfirmingArchiveThreadId] = useState<ThreadId | null>(null);
@@ -725,6 +722,8 @@ export default function Sidebar() {
     ReadonlySet<ProjectId>
   >(() => new Set());
   const { showThreadJumpHints, updateThreadJumpHintsVisibility } = useThreadJumpHintVisibility();
+  const projectRenamingCommittedRef = useRef(false);
+  const projectRenamingInputRef = useRef<HTMLInputElement | null>(null);
   const renamingCommittedRef = useRef(false);
   const renamingInputRef = useRef<HTMLInputElement | null>(null);
   const confirmArchiveButtonRefs = useRef(new Map<ThreadId, HTMLButtonElement>());
@@ -937,6 +936,28 @@ export default function Sidebar() {
     renamingInputRef.current = null;
   }, []);
 
+  const handleRenamingInputMount = useCallback((element: HTMLInputElement | null) => {
+    if (element && renamingInputRef.current !== element) {
+      renamingInputRef.current = element;
+      element.focus();
+      element.select();
+      return;
+    }
+    if (element === null && renamingInputRef.current !== null) {
+      renamingInputRef.current = null;
+    }
+  }, []);
+
+  const hasRenameCommitted = useCallback(() => renamingCommittedRef.current, []);
+  const markRenameCommitted = useCallback(() => {
+    renamingCommittedRef.current = true;
+  }, []);
+
+  const cancelProjectRename = useCallback(() => {
+    setRenamingProjectId(null);
+    projectRenamingInputRef.current = null;
+  }, []);
+
   const commitRename = useCallback(
     async (threadId: ThreadId, newTitle: string, originalTitle: string) => {
       const finishRename = () => {
@@ -984,6 +1005,53 @@ export default function Sidebar() {
     [],
   );
 
+  const commitProjectRename = useCallback(
+    async (projectId: ProjectId, newTitle: string, originalTitle: string) => {
+      const finishRename = () => {
+        setRenamingProjectId((current) => {
+          if (current !== projectId) return current;
+          projectRenamingInputRef.current = null;
+          return null;
+        });
+      };
+
+      const trimmed = newTitle.trim();
+      if (trimmed.length === 0) {
+        toastManager.add({
+          type: "warning",
+          title: "Project title cannot be empty",
+        });
+        finishRename();
+        return;
+      }
+      if (trimmed === originalTitle) {
+        finishRename();
+        return;
+      }
+      const api = readNativeApi();
+      if (!api) {
+        finishRename();
+        return;
+      }
+      try {
+        await api.orchestration.dispatchCommand({
+          type: "project.meta.update",
+          commandId: newCommandId(),
+          projectId,
+          title: trimmed,
+        });
+      } catch (error) {
+        toastManager.add({
+          type: "error",
+          title: "Failed to rename project",
+          description: error instanceof Error ? error.message : "An error occurred.",
+        });
+      }
+      finishRename();
+    },
+    [],
+  );
+
   const { copyToClipboard: copyThreadIdToClipboard } = useCopyToClipboard<{
     threadId: ThreadId;
   }>({
@@ -1040,6 +1108,8 @@ export default function Sidebar() {
       );
 
       if (clicked === "rename") {
+        setRenamingProjectId(null);
+        projectRenamingInputRef.current = null;
         setRenamingThreadId(threadId);
         setRenamingTitle(thread.title);
         renamingCommittedRef.current = false;
@@ -1206,11 +1276,20 @@ export default function Sidebar() {
 
       const clicked = await api.contextMenu.show(
         [
+          { id: "rename", label: "Rename project" },
           { id: "copy-path", label: "Copy Project Path" },
           { id: "delete", label: "Remove project", destructive: true },
         ],
         position,
       );
+      if (clicked === "rename") {
+        setRenamingThreadId(null);
+        renamingInputRef.current = null;
+        setRenamingProjectId(projectId);
+        setRenamingProjectTitle(project.name);
+        projectRenamingCommittedRef.current = false;
+        return;
+      }
       if (clicked === "copy-path") {
         copyPathToClipboard(project.cwd, { path: project.cwd });
         return;
@@ -1602,9 +1681,43 @@ export default function Sidebar() {
               />
             )}
             <ProjectFavicon cwd={project.cwd} />
-            <span className="flex-1 truncate text-xs font-medium text-foreground/90">
-              {project.name}
-            </span>
+            {renamingProjectId === project.id ? (
+              <input
+                ref={(element) => {
+                  if (element && projectRenamingInputRef.current !== element) {
+                    projectRenamingInputRef.current = element;
+                    element.focus();
+                    element.select();
+                  }
+                }}
+                className="min-w-0 flex-1 truncate rounded border border-ring bg-transparent px-0.5 text-xs font-medium text-foreground/90 outline-none"
+                value={renamingProjectTitle}
+                onChange={(event) => setRenamingProjectTitle(event.target.value)}
+                onKeyDown={(event) => {
+                  event.stopPropagation();
+                  if (event.key === "Enter") {
+                    event.preventDefault();
+                    projectRenamingCommittedRef.current = true;
+                    void commitProjectRename(project.id, renamingProjectTitle, project.name);
+                  } else if (event.key === "Escape") {
+                    event.preventDefault();
+                    projectRenamingCommittedRef.current = true;
+                    cancelProjectRename();
+                  }
+                }}
+                onBlur={() => {
+                  if (!projectRenamingCommittedRef.current) {
+                    void commitProjectRename(project.id, renamingProjectTitle, project.name);
+                  }
+                }}
+                onClick={(event) => event.stopPropagation()}
+                onPointerDown={(event) => event.stopPropagation()}
+              />
+            ) : (
+              <span className="flex-1 truncate text-xs font-medium text-foreground/90">
+                {project.name}
+              </span>
+            )}
           </SidebarMenuButton>
           <Tooltip>
             <TooltipTrigger
@@ -1693,8 +1806,9 @@ export default function Sidebar() {
                 renamingThreadId={renamingThreadId}
                 renamingTitle={renamingTitle}
                 setRenamingTitle={setRenamingTitle}
-                renamingInputRef={renamingInputRef}
-                renamingCommittedRef={renamingCommittedRef}
+                onRenamingInputMount={handleRenamingInputMount}
+                hasRenameCommitted={hasRenameCommitted}
+                markRenameCommitted={markRenameCommitted}
                 confirmingArchiveThreadId={confirmingArchiveThreadId}
                 setConfirmingArchiveThreadId={setConfirmingArchiveThreadId}
                 confirmArchiveButtonRefs={confirmArchiveButtonRefs}
diff --git a/apps/web/src/store.test.ts b/apps/web/src/store.test.ts
index da1498d494..9deb578d3e 100644
--- a/apps/web/src/store.test.ts
+++ b/apps/web/src/store.test.ts
@@ -328,6 +328,27 @@ describe("incremental orchestration updates", () => {
     expect(next.bootstrapComplete).toBe(false);
   });
 
+  it("updates the existing project title when project.meta-updated arrives", () => {
+    const projectId = ProjectId.makeUnsafe("project-1");
+    const state = makeState(
+      makeThread({
+        projectId,
+      }),
+    );
+
+    const next = applyOrchestrationEvent(
+      state,
+      makeEvent("project.meta-updated", {
+        projectId,
+        title: "Renamed Project",
+        updatedAt: "2026-02-27T00:00:01.000Z",
+      }),
+    );
+
+    expect(next.projects[0]?.name).toBe("Renamed Project");
+    expect(next.projects[0]?.updatedAt).toBe("2026-02-27T00:00:01.000Z");
+  });
+
   it("preserves state identity for no-op project and thread deletes", () => {
     const thread = makeThread();
     const state = makeState(thread);