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)