The Man Who Lost Himself is a 1941 American comedy film directed by Edward Ludwig and starring Brian Aherne, Kay Francis and Nils Asther. Aherne plays a man who encounters his exact double and is later mistaken for the other man who is now dead. The film is based on the novel of the same name by Henry De Vere Stacpoole. The novel was also previously adapted to film in 1920. The new version shifts the setting from London of the original to New York, although it features several British actors.