Percy Marmont (25 November 1883 – 3 March 1977) was an English film actor.

A veteran film actor by 1923, he scored a big hit that year in If Winter Comes, later remade by MGM in 1947.

He is best remembered today for playing the title character in Lord Jim (1925), the first film version of Joseph Conrad's novel, and for playing one of Clara Bow's love interests in the Paramount Pictures film Mantrap (1926).

He was born and died in London, England.

Marmont had two daughters with his wife Dorothy, Patricia Marmont, an actress then theatrical agent at one time married to actor Nigel Green, and Pamela, a stage actress married to actor Moray Watson.