Frontier Marshal is a 1934 American Pre-Code Western film directed by Lewis Seiler and starring George O'Brien.

Produced by Fox Film and Sol M. Wurtzel, the film is the first based on Stuart N. Lake's enormously popular but largely fictitious "biography" of Wyatt Earp, Wyatt Earp: Frontier Marshal.

A second version of the film, also produced by Wurtzel, was made in 1939, and a third interpretation by John Ford entitled My Darling Clementine was released in 1946.

[3] Wandering lawman Michael Wyatt rides into a lawless town and runs into conflict with the local boss, Doc Warren.

Actor Ward Bond appears in three films based on the Wyatt Earp story and Lake's spurious book: this film, the 1939 version and John Ford's My Darling Clementine (1946), playing different roles in all three.