- Hugh O'Brian
- Wyatt Earp
- Bruce Boxleitner
- Sam - Sheriff of Cochise County
- Paul Brinegar
- Jim 'Dog' Kelly
- Harry Carey Jr.
- Digger Phelps
- Bo Hopkins
- Rattlesnake Reynolds
- Alex Hyde-White
- Woodworth Clum
- Martin Kove
- Ed Ross
- Don Meredith
- Clay - the Bartender
- Jay Underwood
- Jack Montgomery
- Douglas Fowley
- Doc Holliday / Doc Fabrique (flashback sequences) (archive footage)
- John Anderson
- Virgil Earp (flashback sequence)
- Ray Boyle
- Morgan Earp (flashback sequence)
- Rayford Barnes
- Ike Clanton (flashback sequence)
- Steve Brodie
- Sheriff John Behan (flashback sequence)
- Lloyd Corrigan
- Ned Buntline (flashback sequence)
- Nancy Hale
- Miss Sally (flashback sequence)
- Trevor Bardette
- Old Man Clanton (flashback sequence)
- Norman Alden
- Johnny Ringo (flashback sequence) (as Norm Alden)
- William Phipps
- Curly Bill Brocius (flashback sequence)
- Ralph Reed
- Billy Clanton (flashback sequence)
- Stacy Harris
- Mayor Clum (flashback sequence)
- Gregg Palmer
- Tom McLowery (flashback sequence)
- Bob Steele
- Deputy Sheriff Sam (flashback sequence)
- George D. Wallace
- Frank McLowery (flashback sequence)
- William Tannen
- Gyp Clements / Deputy Hal Norton (flashback sequences) (archive footage)
- Jean Allison
- Minna Marlin (flashback sequences)
- Tori Bridges
- Town Girl #1
- Gene Collins
- Telegraph Boy (flashback sequences)
- Charles Fredericks
- Pete Albright (flashback sequences)
- Harry Harvey
- Smith - Telegrapher (flashback sequences)
- George Holmes
- Mr. Discoll (flashback sequences)
- Rodolfo Hoyos Jr.
- Don Pedro (flashback sequences)
- Ruben Moreno
- Macia (flashback sequences)
- Neyle Morrow
- Hal Clements (flashback sequences)
- Gordon Richards
- Judge Fabian (flashback sequences)
- Herb Vigran
- Bob Rakle (flashback sequences)
- Don Wilbanks
- Breakenridge (flashback sequences)
- Gordon Wynn
- Colonel Warren (flashback sequences)
