Frank Marion Thomas (July 13, 1889 – November 25, 1989) was an American character actor of stage, screen and television.

His best-known films were We Who Are About To Die (1937), A Man to Remember (1938), A Shot In the Dark (1941), Desert Trail (1942), and No Place for a Lady (1943).

His last screen appearance was in The Killing of a Chinese Bookie (1976).

[citation needed] At one point in his career, in 1937 alone, he appeared in 21 films.

He and his wife, actress Mona Bruns,[2] were the parents of actor Frankie Thomas.