John Devon Roland Pertwee, known professionally as Jon Pertwee, was an English actor. Born into a theatrical family, he became nationally known as a comedy actor, playing Chief Petty Officer Pertwee in the BBC Radio sitcom The Navy Lark (1959–1977) and appearing in four films in the Carry On series.

The Navy Lark is a radio sitcom about life aboard a British Royal Navy frigate named HMS Troutbridge based in HMNB Portsmouth. In series 1 and 2, the ship and crew were stationed offshore at an unnamed location known simply as "The Island". In series 2 this island was revealed to be owned by Lt. Cdr. Stanton.