| Person | Type | Job | Role(s) |
|---|---|---|---|
 Adriano Baracco | Crew | Writing | Story |
Alfonso Avincola | Crew | Camera | Still Photographer |
Antonio Rinaldi | Crew | Camera | Director of Photography |
Dino Maiuri | Crew | Writing | Screenplay, Story |
Brian Degas | Crew | Writing | Screenplay |
Bruno Todini | Crew | Production | Production Manager |
Cristo Verrillo | Crew | Lighting | Electrician |
 Dino De Laurentiis | Crew | Production | Producer |
Ennio Michettoni | Crew | Art | Set Dresser |
 Ennio Morricone | Crew | Sound | Original Music Composer |
 Flavio Mogherini | Crew | Art | Art Direction |
Fred Sidewater | Crew | Production | Production Accountant |
Giorgio Adriani | Crew | Production | Production Assistant |
Guidarino Guidi | Crew | Production | Casting Director |
 Lamberto Bava | Crew | Directing | Assistant Director |
Luciana Marinucci | Crew | Costume & Make-Up | Costume Design |
Marco Tamburella | Crew | Production | Production Assistant |
 Mario Bava | Crew | Writing | Screenplay, Director, Director of Photography |
Otello Fava | Crew | Costume & Make-Up | Makeup Artist |
Piero Gherardi | Crew | Costume & Make-Up | Costume Design |
Romana Fortini | Crew | Editing | Editor |
Salvatore Caruso | Crew | Camera | Assistant Camera |
Tudor Gates | Crew | Writing | Screenplay |
Renata Magnanti | Crew | Costume & Make-Up | Hairdresser |
Gaetano Testa | Crew | Sound | Boom Operator |
 Angela Giussani | Crew | Writing | Story |
 Luciana Giussani | Crew | Writing | Story |
Rosalba Scavia | Crew | Crew | Script |
Mario Celentano | Crew | Sound | Sound Recordist |
Nicola Balini | Crew | Crew | Technical Advisor |
Nadia Bonifazi | Crew | Editing | Assistant Editor |
Dino Leonetti | Crew | Art | Assistant Art Director |
Mavio Celentano | Crew | Sound | Sound Recordist |
Elena Da Forno | Crew | Art | Assistant Art Director |
 Adolfo Celi | Cast | Actor | Ralph Valmont |
 Andrea Bosic | Cast | Actor | Bank Manager |
 Annie Gorassini | Cast | Actress | Rose |
 Carlo Croccolo | Cast | Actor | Lorry Driver |
 Caterina Boratto | Cast | Actress | Lady Clark |
 Claudio Gora | Cast | Actor | Police Chief |
 Domenico Ravenna | Cast | Actor | Party Guest (uncredited) |
 Federico Boido | Cast | Actor | Joe |
 Filippo Perego | Cast | Actor | Party Guest (uncredited) |
 Francesco Mulè | Cast | Actor | (uncredited) |
 Giorgio Gennari | Cast | Actor | Rudy (uncredited) |
Giorgio Sciolette | Cast | Actor | Dr. Ferrar |
 Giulio Donnini | Cast | Actor | Dr. Vernier (uncredited) |
Giuseppe Fazio | Cast | Tony (uncredited) | |
 Isarco Ravaioli | Cast | Actor | Valmont's Henchman #2 |
 John Phillip Law | Cast | Actor | Diabolik |
 Lidia Biondi | Cast | Actress | Policewoman |
 Lucia Modugno | Cast | Actress | Prostitute |
 Mario Donen | Cast | Actor | Sgt. Danek |
 Marisa Mell | Cast | Actress | Eva Kant |
 Michel Piccoli | Cast | Actor | Inspector Ginko |
 Renzo Palmer | Cast | Actor | Mr. Hammond |
 Sandro Dori | Cast | Actor | Stud (uncredited) |
 Terry-Thomas | Cast | Actor | Minister of Interior / Minister of Finance |
 Tiberio Mitri | Cast | Actor | Valmont's Henchman #1 |
 Vezio Natili | Cast | Actor | Party Guest (uncredited) |
 Milena Zampana | Cast | Party Guest (uncredited) | |
 Raniero Dorascenzi | Cast | Actor | Party Guest (uncredited) |
Augusto Innocenzi | Cast | Party Guest (uncredited) | |
 Oscar Sciamanna | Cast | Journalist (uncredited) | |
 Massimo Ciprari | Cast | Actor | Fake Diplomat (uncredited) |
Silvio Klein | Cast | Actor | Journalist at Press Conference (uncredited) |
Orlando Pallamari | Cast | Mr. Hammond's Secretary (uncredited) | |
 Renzo Granelli | Cast | Party Guest (uncredited) | |
Edward Febo Kelleng | Cast | Sir Harold Clark (uncredited) | |
| Person | Type | Job | Role(s) |
