Frontier Marshal is a 1939 American Western film directed by Allan Dwan and starring Randolph Scott as Wyatt Earp. The film is the second produced by Sol M. Wurtzel based on Stuart N. Lake's biography of Earp Wyatt Earp: Frontier Marshal. An earlier version was Wurtzel's Frontier Marshal, filmed in 1934. The film was remade by John Ford in 1946 as My Darling Clementine, including whole scenes reshot from the 1939 film.

Allan Dwan was a pioneering Canadian-born American motion picture director, producer, and screenwriter.