Mount Batten is a 24 metre tall outcrop of rock on a 600 metre peninsula at Plymouth Sound in England.

It has been an important defensive point for the old part of Plymouth and its harbour, being on the opposite side of the Cattewater, the channel leading from the old town to the sea. It has had a fort for many centuries.

Between 1917 and 1945, with some gaps, it was a flying boat base for both the Royal Air Force and the Royal Navy. Short Sunderland flying boats operated from RAF Mount Batten during WWII taking part in the Battle of the Atlantic. The RAF operated search and rescue launches there with the help of Aircraftman Shaw. The RAF finally left in 1992.

The peninsular is now a marina and centre for sea sports.