The Guns of Fort Petticoat is a 1957 American Western film produced by Harry Joe Brown and Audie Murphy for Brown-Murphy Pictures. It was based on the 1955 short story "Petticoat Brigade" by Chester William Harrison (1913–1994) that he expanded into a novelization for the film's release. It was directed by George Marshall, distributed by Columbia Pictures and filmed at the Iverson Movie Ranch and at Old Tucson.

The fictional story tells the tale of an Army deserter training a disparate group of women to become Indian fighters climaxing in a Battle of the Alamo-type action.