Colonel Cord McNally
Captain Pierre Cordona (Frenchy)
Shasta Delaney
Phillips
Seargent Tuscarora Phillips
Ketcham
Maria Carmen
Amelita
Dr. Ivor Jones
Rio Lobo Deputy
Deputy Whitey Carter
Fourth Gunman
Lt. Harris
Lt. Ned Forsythe
Chuck
Third Gunman
Blackthorne Sheriff Pat Cronin
Rio Lobo Sheriff 'Blue Tom' Hendricks
Union Soldier
Hank, the hotel desk clerk
Rio Lobo Deputy (uncredited)
Corporal in Baggage Car
(uncredited)
Feeny - Bartender (uncredited)
Blackthorne Prostitute (uncredited)
Bart (uncredited)
Picket (uncredited)
Barfly in Blackthorne (uncredited)
Man in Army Post Saloon (uncredited)
Train Engineer (uncredited)
Pete - Henchman (uncredited)
Corporal in Baggage Car (uncredited)
Man Delivering Message to Jail (uncredited)
Card Player (uncredited)
Guitar Player in Opening Credits (uncredited)
Hank - Hotel Clerk (uncredited)