The Purple Vigilantes is a 1938 American Western film directed by George Sherman and starring Robert Livingston, Ray Corrigan, and Max Terhune. Written by Betty Burbridge and Oliver Drake, the film is about a rancher who organizes other ranchers to form a vigilante group in order to rid their town of outlaws. After the outlaws are defeated, some of the men, posing as the vigilant group, go on a crime spree. The Purple Vigilantes is the 12th entry in the Three Mesquiteers series of B-movies produced by Republic Pictures. The film was released in the United Kingdom as Purple Riders because at that time the word "vigilante" was unknown in Britain.