| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alberto De Martino | Crew | Directing | Director |
 Alejandro Ulloa | Crew | Editing | Color Assistant |
 Bruno Nicolai | Crew | Sound | Original Music Composer |
 Dario Sabatello | Crew | Production | Producer |
 Ennio Morricone | Crew | Sound | Original Music Composer |
Frank Walker | Crew | Writing | Screenplay |
Giovanni Bergamini | Crew | Crew | Cinematography |
Otello Colangeli | Crew | Editing | Editor |
Paolo Levi | Crew | Writing | Screenplay, Story |
Stanley Wright | Crew | Writing | Screenplay |
Stefano Canzio | Crew | Writing | Screenplay |
Franco Fontana | Crew | Art | Art Direction |
 Adolfo Celi | Cast | Actor | Mr. Thai - 'Beta' |
 Agata Flori | Cast | Actress | Mildred |
 Aldo Cecconi | Cast | Actor | Wilson |
Ana María Noé | Cast | Actress | Lotte Krayendorf |
 Anthony Dawson | Cast | Actor | Alpha |
 Antonio Gradoli | Cast | Actor | Monte Carlo inspector |
 Bernard Lee | Cast | Actor | Commander Cunningham |
 Caterina Trentini | Cast | (as Kathleen Trentini) | |
 Daniela Bianchi | Cast | Actress | Maya Rafis |
 Enzo Consoli | Cast | Sitting Man at Lecture (as Vincenzo Consoli) | |
Fajda Nicol | Cast | Henchwoman (as Faida Nicol) | |
Francesco Tensi | Cast | Actor | Auctioneer |
 Franco Giacobini | Cast | Actor | Juan |
 Guido Lollobrigida | Cast | Actor | Kurt |
 Kitty Swan | Cast | Actress | Co-agent on ship (uncredited) |
 Leonardo Scavino | Cast | Actor | Ben AHmed (as Leo Scavino) |
 Lois Maxwell | Cast | Actress | Miss Maxwell |
 Margherita Horowitz | Cast | Actress | (creditOnly) |
 Mirella Pamphili | Cast | Actress | (as Mirella Pompili) |
Nando Angelini | Cast | Actor | Ward Jones |
 Neil Connery | Cast | Actor | Dr. Neil Connery |
Lanfranco Ceccarelli | Cast | Assassin (as Franco Ceccarelli) | |
Yee-Wah Yang | Cast | Actress | Yachuko (as Yachuco Yama) |
| Person | Type | Job | Role(s) |
