Rin-Tin-Tin
— Rinty
Frankie Darro
— Jimmy Carter
Hayden Stevenson
— Carter [Ch. 1]
George Brent
— Alan Scott
Pat O'Malley
— Sheriff A. W. Brown
Georgia Hale
— Dianne La Farge
Theodore Lorch
— Pierre La Farge
Lafe McKee
— John Hayden
Frank Brownlee
— Angus MacDonald
Bob Kortman
— Wells - Henchman
Dick Dickinson
— Adams - Henchman
Yakima Canutt
— Ken Davis [Ch. 3] / Deputy [Ch. 8]
Frank Lanning
— Indian George / Jim (ch 1)
Bertee Beaumont
— Pioneer Woman [ch 1-2]
Helen Gibson
— Pioneer Woman [ch 1-2]
William Desmond
— Townsman (uncredited)