848 Naval Air Squadron was a squadron of the Royal Navy Fleet Air Arm. It operated the Westland Sea King HC.4 helicopter and previously provided advanced flying training to pilots for the other squadrons in the Commando Helicopter Force. The squadron was based at RNAS Yeovilton in Somerset and was decommissioned on 24 March 2016.

The Westland WS-61 Sea King is a British licence-built version of the American Sikorsky S-61 helicopter of the same name, built by Westland Helicopters. The aircraft differs considerably from the American version, with Rolls-Royce Gnome engines, British-made anti-submarine warfare systems and a fully computerised flight control system. The Sea King was primarily designed for performing anti-submarine warfare (ASW) missions. A Sea King variant known as the Commando was developed by Westland to serve as a troop transport.