Frontier Marshal is a 1939 American Western film directed by Allan Dwan and starring Randolph Scott as Wyatt Earp.

Frontier Marshal costars Nancy Kelly, Cesar Romero as "Doc Halliday" (the name was changed for the film from the original "Holliday" because of fear of a lawsuit from Holliday's family), John Carradine and Lon Chaney Jr. Ward Bond appears as the town marshal; Bond was also in the 1934 version, and later appears as Morgan Earp in Ford's film.

In Tombstone, Arizona, the sheriff is unwilling to stop Indian Charlie from shooting up the saloon owned by Ben Carter, so new arrival Wyatt Earp does.

The two men work together after visiting entertainer Eddie Foy is kidnapped, and also when Jerry joins forces with Carter to plan the robbery of a gold shipment.

Earp avenges his friend's death and Jerry, remorseful and distraught over her part in the robbery, picks up a gun and finishes off the last of the gang.