 | Marlon Brando als Rio |
 | Karl Malden als Sheriff Dad Longworth |
 | Katy Jurado als Maria Longworth |
 | Ben Johnson als Bob Amory |
 | Slim Pickens als Deputy Lon Dedrick |
 | Larry Duran als Chico Modesto |
 | Sam Gilman als Harvey Johnson |
 | Timothy Carey als Howard Tetley |
 | Miriam Colon als Redhead |
 | Elisha Cook Jr. als Carvey |
 | Rodolfo Acosta als Mexican Rurale Captain |
 | Ray Teal als Barney |
 | John Dierkes als Chet |
 | Philip Ahn als Uncle |
 | Margarita Cordova als Nika Flamenco Dancer |
 | Hank Worden als Doc |
 | Clem Harvey als Tim |
 | William Forrest als Banker |
| Mina Martinez als Margarita |
 | Pina Pellicer als Louisa |
 | John George als Townsman (uncredited) |
 | Harry 'Snub' Pollard als Townsman (uncredited) |
 | Bert Stevens als Townsman (uncredited) |
 | Sheryl Deauville als Marina (uncredited) |
| Marlon Brando | Director |
| Charles Neider | Novel |
| Guy Trosper | Screenplay |
| Calder Willingham | Screenplay |
| Frank P. Rosenberg | Producer |
| Hugo Friedhofer | Original Music Composer |
| Charles Lang | Director of Photography |
| Archie Marshek | Editor |
| George Glass | Executive Producer |
| Walter Seltzer | Executive Producer |
| J. McMillan Johnson | Art Direction |
| Hal Pereira | Art Direction |
| Dominic Mautino | Standby Painter |
| Robert R. Benton | Set Decoration |
| Sam Comer | Set Decoration |
| Yvonne Wood | Costume Design |
| Phil Rhodes | Makeup Artist |
| Henry Wills | Stunt Double |
| Paul Baxley | Stunt Coordinator |
| Jack Lilley | Stunts |
| Gibb Stepp | Stunts |
| Steven Marlo | Stunt Double |
| Rod Serling | Additional Writing |
| Sam Peckinpah | Additional Writing |
| W. Wallace Kelley | Second Unit Director of Photography |
| John P. Fulton | Special Effects |
| Farciot Edouart | Special Effects |
| Richard Mueller | Color Designer |
| Francisco Day | Assistant Director |
| Harry Caplan | Assistant Director |
| Rosita Moreno | Technical Advisor |
| Rodd Redwing | Technical Advisor |
| Henry Scott | Dialogue Coach |
| Wally Westmore | Makeup Supervisor |
| Nellie Manley | Hair Supervisor |
| Josephine Earl | Choreographer |
| Hugo Grenzbach | Sound Recordist |
| Charles Grenzbach | Sound Recordist |
| Carlo Fiore | Producer's Assistant |
