 | Charlton Heston als Harry Steel |
 | Robert Young als Stanley Moorehead |
 | Nicole Maurey als Elena Antonescu |
 | Thomas Mitchell als Ed Morgan |
 | Glenda Farrell als Mrs. Winston |
 | Michael Pate als Pachacutec |
 | Leon Askin als Anton Marcu |
 | William Henry als Phillip Lang |
 | Kurt Katch als Man with rifle |
 | Edward Colmans als Col. Emilio Cardoza |
 | Yma Sumac als Kori-Tica |
 | Alvy Moore als Young Man at Bar (uncredited) |
 | Marion Ross als Miss Morris (uncredited) |
| David Buttolph | Original Music Composer |
| Sydney Boehm | Screenplay |
| Boehm Maximum | Story |
| Sydney Boehm | Story |
| Mel Epstein | Producer |
| Lionel Lindon | Director of Photography |
| Jerry Hopper | Director |
| Ranald MacDougall | Screenplay |
| Hal Pereira | Art Direction |
| Tambi Larsen | Art Direction |
| John P. Fulton | Special Effects |
| Sam Comer | Set Decoration |
| Frank R. McKelvy | Set Decoration |
| Daniel McCauley | Assistant Director |
| Eda Warren | Editor |
| Edith Head | Costume Design |
| Wally Westmore | Makeup Supervisor |
| Harry D. Mills | Sound Recordist |
| John Cope | Sound Recordist |
