The Lenovo Fn and Function Keys Driver (often referred to as the Hotkey Driver or Lenovo Utility) is a driver or software package that enables the Fn key and the special function keys on Lenovo laptops to work correctly. These keys are typically used for tasks like adjusting screen brightness, controlling audio volume, enabling or disabling wireless networks, managing power settings, and other custom shortcuts.

In addition to enabling these functions, the Lenovo Fn and function keys driver often provides support for on-screen displays (OSD) to show the status of volume, brightness, Wi-Fi, etc.