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)