Wild Horse Rustlers is a 1943 American Western film directed by Sam Newfield and written by Joseph O'Donnell.

The film stars Robert Livingston as the Lone Rider and Al St. John as his sidekick "Fuzzy Jones", with Lane Chandler, Linda Leighton, Frank Ellis and Stanley Price.

[3] Tom Cameron, the Lone Rider, discovers that a gang of Nazi spies are interfering with the federal government's plans to round up horses for military service—and, worse, that his own twin brother is helping them.

According to media historian Hal Erickson, "Wild Horse Rustlers was PRC's 1943 entry in the "Nazis on the prairie" western cycle...

Minus the propaganda angle, this is merely another cattle-rustling opus, with the standard western bad guys saying "Seig heil!"