| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alex North | Crew | Sound | Music |
 Art Cruickshank | Crew | Visual Effects | Visual Effects |
 Chuck Roberson | Crew | Crew | Stunts |
David Dockendorf | Crew | Sound | Sound |
Ed Graves | Crew | Art | Art Direction |
 Eduardo García Maroto | Crew | Production | Production Manager |
Elda Magnanti | Crew | Costume & Make-Up | Hairstylist |
Eric Stacey | Crew | Production | Unit Production Manager |
Gladys de Segonzac | Crew | Costume & Make-Up | Wardrobe Master |
Harry Gerstad | Crew | Editing | Editor |
 Jack Hildyard | Crew | Camera | Director of Photography |
James W. Payne | Crew | Art | Set Decoration |
Julio Sempere | Crew | Directing | Assistant Director |
L.B. Abbott | Crew | Visual Effects | Visual Effects |
Michael McLean | Crew | Production | Casting |
Ron Drinkwater | Crew | Camera | Focus Puller |
 Terry Leonard | Crew | Crew | Stunts |
Kip Gowans | Crew | Directing | Assistant Director |
Fernando González | Crew | Art | Set Decoration |
S. Lee Pogostin | Crew | Directing | Director, Writer |
Douglas Webb | Crew | Camera | Still Photographer |
Ralph M. Leo | Crew | Production | Production Accountant |
Giuliano Laurenti | Crew | Costume & Make-Up | Makeup Artist |
Marvin Schwarz | Crew | Production | Producer |
John Purchese | Crew | Sound | Sound |
 Burgess Meredith | Cast | Actor | Ramsey Williams |
 Claude Dauphin | Cast | Actor | Maurice |
 Dominique Davray | Cast | Actress | Barmaid (uncredited) |
Hedy Scott | Cast | Voting Booth Clerk (uncredited) | |
 Helen Cherry | Cast | Actress | Evelyn Carlson |
 James Coburn | Cast | Actor | John Cunningham |
 Karen Black | Cast | Actress | Ellen |
 Lee Remick | Cast | Actress | Sheila Metcalfe |
 Lilli Palmer | Cast | Actress | Adrianne |
 Patrick Magee | Cast | Actor | Alexi |
 Sabine Sun | Cast | Actress | Belgian Prostitute |
 Sterling Hayden | Cast | Actor | Michael Carlson |
Laura Hale | Cast | Asst. in Stock Exchange (uncredited) | |
Diane Myles | Cast | Voting Booth Clerk (uncredited) | |
Bea Thompkins | Cast | Actress | Voting Booth Clerk (uncredited) |
Jo Nupie | Cast | Flemish lady (uncredited) | |
Allen Emerson | Cast | Actor | Slick Haired Men (uncredited) |
| Person | Type | Job | Role(s) |
