Kirk Douglas
Johnny Hawks

Elsa Martinelli
Onahti

Walter Matthau
Wes Todd

Diana Douglas
Susan Rogers

Walter Abel
Captain Trask

Lon Chaney Jr.
Chivington (as Lon Chaney)

Eduard Franz
Red Cloud

Harry Landers
Grey Wolf / Captain Trask Attaché

Alan Hale Jr.
Will Crabtree (as Alan Hale)

Michael Winkelman
Tommy Rogers

Elisha Cook Jr.
Briggs (as Elisha Cook)

Ray Teal
Morgan

Frank Cady
Trader Joe

Hank Worden
Crazy Bear / Guardhouse Keeper

Lane Chandler
Head Settler (uncredited)

Robert "Buzz" Henry
Lt. Shaeffer (uncredited)