Martin Walker (27 July 1901 – 18 September 1955) was a British stage and screen actor. He appeared in films for over thirty years from 1922 onwards, mainly in supporting roles and occasionally as a lead, such as in Help Yourself (1932).

The actor also wrote and directed a short film, Hide and Seek, in 1922. He made his final film appearance in The Belles of St. Trinian's in 1954.