 | Gregory Peck als James McKay |
 | Jean Simmons als Julie Maragon |
 | Carroll Baker als Patricia Terrill |
 | Charlton Heston als Steve Leech |
 | Burl Ives als Rufus Hannassey |
 | Charles Bickford als Major Henry Terrill |
 | Alfonso Bedoya als Ramón Guiteras |
 | Chuck Connors als Buck Hannassey |
 | Chuck Hayward als Rafe Hannassey |
 | Buff Brady als Dude Hannassey |
 | Jim Burk als Blackie / Cracker Hannassey |
 | Dorothy Adams als Hannassey Woman |
 | Chuck Roberson als Terrill Cowboy |
 | Bob Morgan als Terrill Cowboy |
 | John McKee als Terrill Cowboy |
| Slim Talbot als Terrill Cowboy |
 | Roddy McDowall als Hannassey Watchman (uncredited) |
 | Richard Alexander als Party Guest - Oceans (uncredited) |
 | Harry Cheshire als Party Guest (uncredited) |
 | Ralph Sanford als Party Guest (uncredited) |
| William Hoehne Jr. als Lefty Hannassey cowhand (uncredited) |
| Donald Kerr als Liveryman (uncredited) |
 | Chuck Hamilton als Party Guest (uncredited) |
| Sy Bartlett | Screenplay |
| Dorothy Whitney | Casting |
| William Wyler | Director |
| Jerome Moross | Original Music Composer |
| John Faure | Editor |
| Robert Wilder | Screenplay |
| Robert Belcher | Editor |
| Gregory Peck | Producer |
| William Wyler | Producer |
| Donald Hamilton | Novel |
| James R. Webb | Screenplay |
| Franz Planer | Director of Photography |
| Frank Hotaling | Art Direction |
| Fred Mandl | Camera Operator |
| Dan Greenway | Makeup Artist |
| Ivan Volkman | Assistant Director |
| Buff Brady | Stunts |
| Edward G. Boyle | Set Decoration |
| Yvonne Wood | Costume Design |
| Joan St. Oegger | Hairstylist |
| Harry Maret | Makeup Artist |
| Saul Bass | Title Graphics |
| Slim Talbot | Stunts |
| Robert Gary | Script Supervisor |
| Neva Rames | Set Costumer |
| Carey Leverette | Choreographer |
| Robert Wyler | Adaptation |
| Robert Swink | Supervising Film Editor |
| Del Harris | Sound Effects Editor |
| Bernard Mayers | Orchestrator |
| Sam Freedle | Script Supervisor |
| John K. Kean | Sound Recordist |
| Jessamyn West | Adaptation |
| Conrad Salinger | Orchestrator |
| Harry Sundby | Gaffer |
| Robert Swink | Second Unit |
| Hal Ashby | Assistant Editor |
| Gale McGarry | Hairstylist |
| Roger Heman Sr. | Sound Recordist |
| Alexander Courage | Orchestrator |
| Gil Grau | Orchestrator |
| Robert Templeton | Second Assistant Director |
| John Livesley | Key Grip |
| John Waters | Second Unit Director |
| Emile Santiago | Costume Design |
| Hal Needham | Stunts |
| Robert Wyler | Associate Producer |
| Robert Swink | Second Unit Director |
| Ray Gosnell Jr. | Second Assistant Director |
| Harry Alphin | Sound Effects Editor |
| Al Gonzales | Special Effects |
| Bill Babcock | Stunts |
| Jim Burk | Stunts |
| Martha Crawford | Stunt Double |
| Donna Hall | Stunts |
| Chuck Hayward | Stunts |
| John McKee | Stunts |
| Bob Morgan | Stunts |
| Slim Pickens | Stunts |
| Chuck Roberson | Stunts |
| Eddie Garvin | Camera Operator |
