 | Noah Beery Jr. Stormy |
 | Jean Rogers Kerry Dorn |
 | J. Farrell MacDonald Trinidad Dorn |
 | Raymond Hatton Stuffy |
 | Walter Miller Craig |
 | Fred Kohler Deem Dorn |
 | James P. Burtis Greasy |
 | Rex Rex (as Rex King of Wild Horses) |
 | Rex Junior Rex as a Colt (as Rex Jr.) |
| Buck Bucko Cowhand (uncredited) |
| Roy Bucko Cowhand (uncredited) |
 | Edmund Cobb Brakeman (uncredited) |
| W.H. Davis Mr. Dearman (uncredited) |
| Art Dillard Cowhand (uncredited) |
| Bert Dillard Cowhand (uncredited) |
 | Chester Gan Chinaman (uncredited) |
 | Robert Homans Train Conductor (uncredited) |
 | Wilfred Lucas Mack's Horse Trainer (uncredited) |
 | Cliff Lyons Cowhand (uncredited) |
 | Cactus Mack Arizona Wranglers Band Member Cactus (uncredited) |
 | Sam McDaniel Mack's Hostler (uncredited) |
 | Monte Montague Cowhand (uncredited) |
 | Bud Osborne Cowhand (uncredited) |
| Jimmy Phillips Cowhand (uncredited) |
 | Harry Woods Mack - Red Wing's Owner (uncredited) |
 | Glenn Strange Arizona Wranglers Band Member 'Peewee' Strange (uncredited) |
| Writing | |
| Cherry Wilson | Writer |
Production | |
| Henry MacRae | Producer |
Writing | |
| Ben Grauman Kohn | Writer |
| George H. Plympton | Writer |
Camera | |
| William A. Sickner | Director of Photography |
Sound | |
| Gilbert Kurland | Sound |
Art | |
| Ralph Berger | Art Direction |
Camera | |
| John Hickson | Director of Photography |
Sound | |
| Heinz Roemheld | Music |
Editing | |
| Murray Seldeen | Editor |
Camera | |
| Richard Fryer | Director of Photography |
Directing | |
| Clifford Smith | Assistant Director |
| Lew Landers | Director |
