William Devlin (5 December 1911 – 25 January 1987) was a Scottish actor who appeared widely in films and television in a screen career that lasted from 1937 until 1967. The son of an architect, he was born in Aberdeen in 1911. An older brother was Lord Devlin. Devlin was educated at Stonyhurst College, where he was Head of the School, and at Merton College, Oxford, where he matriculated in 1930. His first stage appearance was with Nancy Price in the play Nurse Cavell by C. S. Forester and C. E. Bechhofer Roberts. In this play he had the role of the spy who betrayed Edith Cavell.