| Person | Type | Job | Role(s) |
|---|---|---|---|
 Bernard Gordon | Crew | Writing | Screenplay |
 Dimitri Tiomkin | Crew | Sound | Original Music Composer |
 Guy Green | Crew | Directing | Co-Director |
 Jack Hildyard | Crew | Camera | Director of Photography |
 Jesús Franco | Crew | Production | Assistant Production Manager |
John Moore | Crew | Art | Production Design |
Maude Spector | Crew | Production | Casting |
 Michał Waszyński | Crew | Production | Producer |
 Nicholas Ray | Crew | Directing | Director |
 Philip Yordan | Crew | Writing | Screenplay |
Robert Lawrence | Crew | Editing | Editor |
Samuel Bronston | Crew | Production | Producer |
Veniero Colasanti | Crew | Art | Production Design |
Alan Brown | Crew | Production | Producer |
 Alfred Lynch | Cast | Actor | Gerald (uncredited) |
 Alfredo Mayo | Cast | Actor | Spanish Minister |
 Andrea Esterhazy | Cast | Actor | Austrian Minister (uncredited) |
 Aram Stephan | Cast | Actor | Gaumaire |
 Ava Gardner | Cast | Actress | Baroness Natalie Ivanoff |
 Burt Kwouk | Cast | Actor | Old Man (voice) |
 Carlos Casaravilla | Cast | Actor | Japanese Minister (uncredited) |
 Charlton Heston | Cast | Actor | Maj. Matt Lewis |
 Conchita Montes | Cast | Actress | Mme Gaumaire |
 David Niven | Cast | Actor | Sir Arthur Robertson |
 Elizabeth Sellars | Cast | Actress | Lady Sarah Robertson |
 Eric Pohlmann | Cast | Actor | Baron von Meck |
 Fernando Sancho | Cast | Actor | Belgian Minister (uncredited) |
 Flora Robson | Cast | Actress | Dowager Empress Tzu-Hsi |
 Félix Dafauce | Cast | Actor | Dutch Minister (uncredited) |
 Geoffrey Bayldon | Cast | Actor | Smythe |
 George Wang | Cast | Actor | Boxer Chief (uncredited) |
Guillermo Vera | Cast | El hombre del carrito (uncredited) | |
 Harry Andrews | Cast | Actor | Father de Bearn |
 Jacques Sernas | Cast | Actor | Maj. Bobrinski |
 Jerome Thor | Cast | Capt. Andy Marshall | |
 John Ireland | Cast | Actor | Sgt. Harry |
 John Moulder-Brown | Cast | Actor | Tommy (uncredited) |
 Joseph Fürst | Cast | Actor | Capt. Hanselman |
 José Nieto | Cast | Actor | Italian Minister |
 Jūzō Itami | Cast | Actor | Col. Shiba |
 Kurt Kasznar | Cast | Actor | Baron Sergei Ivanoff |
 Leo Genn | Cast | Actor | Gen. Jung-Lu |
 Lucille Soong | Cast | Actress | Concubine (uncredited) |
 Lucy Appleby | Cast | Actress | Martha (uncredited) |
 Lynne Sue Moon | Cast | Teresa | |
 Martin Miller | Cast | Actor | Hugo Bergmann |
 Massimo Serato | Cast | Actor | Garibaldi |
 Mervyn Johns | Cast | Actor | Clergyman |
 Michael Chow | Cast | Actor | Chiang (uncredited) |
 Milton Reid | Cast | Actor | Boxer (uncredited) |
Nicholas Ray | Cast | Actor | US Minister (uncredited) |
 Paul Lukas | Cast | Actor | Dr. Steinfeldt |
 Paul Naschy | Cast | Actor | Extra (uncredited) |
 Philippe Leroy | Cast | Actor | Julliard |
 Robert Helpmann | Cast | Actor | Prince Tuan |
 Robert Rietti | Cast | Actor | Spanish Minister (voice) (uncredited) |
 Robert Urquhart | Cast | Actor | Capt. Hanley |
 Walter Gotell | Cast | Actor | Capt. Hoffman |
 Chow Siu-Loi | Cast | Actor | Court Boxer (uncredited) |
 Mike Steen | Cast | Actor | Undetermined Role (uncredited) |
 Mitchell Kowall | Cast | US Marine (uncredited) | |
R.S.M. Brittain | Cast | Sergeant Major (uncredited) | |
| Person | Type | Job | Role(s) |
