diff --git a/studio/backend/run.py b/studio/backend/run.py
index e32b912c37..b892037565 100644
--- a/studio/backend/run.py
+++ b/studio/backend/run.py
@@ -158,6 +158,29 @@ def _find_free_port(host: str, start: int, max_attempts: int = 20) -> int:
     )
 
 
+_PID_FILE = Path.home() / ".unsloth" / "studio" / "studio.pid"
+
+
+def _write_pid_file():
+    """Write the current process PID to the studio PID file."""
+    try:
+        _PID_FILE.parent.mkdir(parents = True, exist_ok = True)
+        _PID_FILE.write_text(str(os.getpid()))
+    except OSError:
+        pass
+
+
+def _remove_pid_file():
+    """Remove the PID file if it belongs to this process."""
+    try:
+        if _PID_FILE.is_file():
+            stored = _PID_FILE.read_text().strip()
+            if stored == str(os.getpid()):
+                _PID_FILE.unlink(missing_ok = True)
+    except OSError:
+        pass
+
+
 def _graceful_shutdown(server = None):
     """Explicitly shut down all subprocess backends and the uvicorn server.
 
@@ -165,6 +188,7 @@ def _graceful_shutdown(server = None):
     before the parent exits. This is critical on Windows where atexit
     handlers are unreliable after Ctrl+C.
     """
+    _remove_pid_file()
     logger.info("Graceful shutdown initiated — cleaning up subprocesses...")
 
     # 1. Shut down uvicorn server (releases the listening socket)
@@ -307,6 +331,11 @@ def run_server(
     thread.start()
     time.sleep(3)
 
+    _write_pid_file()
+    import atexit
+
+    atexit.register(_remove_pid_file)
+
     if not silent:
         display_host = _resolve_external_ip() if host == "0.0.0.0" else host
 
diff --git a/unsloth_cli/commands/studio.py b/unsloth_cli/commands/studio.py
index c6d398eebd..a2f0873e22 100644
--- a/unsloth_cli/commands/studio.py
+++ b/unsloth_cli/commands/studio.py
@@ -166,6 +166,74 @@ def studio_default(
         typer.echo("\nShutting down...")
 
 
+# ── unsloth studio stop ───────────────────────────────────────────────
+
+_PID_FILE = STUDIO_HOME / "studio.pid"
+
+
+@studio_app.command()
+def stop():
+    """Stop a running Unsloth Studio server.
+
+    Reads the PID from ~/.unsloth/studio/studio.pid and sends SIGTERM
+    (or TerminateProcess on Windows) to shut it down gracefully.
+    """
+    import signal as _signal
+
+    if not _PID_FILE.is_file():
+        typer.echo("No running Studio server found (no PID file).")
+        raise typer.Exit(0)
+
+    pid_text = _PID_FILE.read_text().strip()
+    if not pid_text.isdigit():
+        typer.echo(f"Invalid PID file contents: {pid_text}")
+        _PID_FILE.unlink(missing_ok = True)
+        raise typer.Exit(1)
+
+    pid = int(pid_text)
+
+    # Check if the process is still alive
+    try:
+        os.kill(pid, 0)
+    except ProcessLookupError:
+        typer.echo(
+            f"Studio server (PID {pid}) is not running. Cleaning up stale PID file."
+        )
+        _PID_FILE.unlink(missing_ok = True)
+        raise typer.Exit(0)
+    except PermissionError:
+        pass  # process exists but we may not own it; try to signal anyway
+
+    # Send SIGTERM (graceful shutdown) or TerminateProcess on Windows
+    try:
+        if sys.platform == "win32":
+            subprocess.run(["taskkill", "/PID", str(pid), "/F"], check = True)
+        else:
+            os.kill(pid, _signal.SIGTERM)
+        typer.echo(f"Sent shutdown signal to Studio server (PID {pid}).")
+    except ProcessLookupError:
+        typer.echo(f"Studio server (PID {pid}) already exited.")
+        _PID_FILE.unlink(missing_ok = True)
+        raise typer.Exit(0)
+    except Exception as e:
+        typer.echo(f"Failed to stop Studio server (PID {pid}): {e}", err = True)
+        raise typer.Exit(1)
+
+    # Wait briefly for the process to exit and clean up
+    for _ in range(10):
+        time.sleep(0.5)
+        try:
+            os.kill(pid, 0)
+        except ProcessLookupError:
+            _PID_FILE.unlink(missing_ok = True)
+            typer.echo("Studio server stopped.")
+            raise typer.Exit(0)
+        except PermissionError:
+            break
+
+    typer.echo("Studio server is shutting down (may take a few seconds).")
+
+
 # ── unsloth studio setup / update ─────────────────────────────────────