| Person | Type | Job | Role(s) |
|---|---|---|---|
 Angelo Ragusa | Crew | Crew | Stunts |
 Claudio M. Cutry | Crew | Editing | Editor |
 Erwin C. Dietrich | Crew | Production | Producer |
Giantito Burchiellaro | Crew | Art | Art Direction |
 Jerry Goldsmith | Crew | Sound | Original Music Composer |
Joe Pollini | Crew | Production | Production Manager |
Katina Zinner | Crew | Editing | Editor |
 Marcello Gatti | Crew | Camera | Director of Photography |
Morris L. West | Crew | Writing | Novel |
Patrizia Ceresani | Crew | Editing | Assistant Editor |
Paul Maslansky | Crew | Production | Producer |
Peter Zinner | Crew | Directing | Director |
 Renzo Rossellini | Crew | Production | Co-Producer |
Robert Katz | Crew | Writing | Writer, Screenplay |
 Rod Serling | Crew | Writing | Adaptation |
Wayne Fitzgerald | Crew | Art | Title Designer |
William R. Forman | Crew | Production | Executive Producer |
Tony Brandt | Crew | Directing | Assistant Director |
Stefano Marino | Crew | Lighting | Electrician |
Fabrizio Caracciolo | Crew | Costume & Make-Up | Costume Design |
Fernando Valento | Crew | Art | Construction Manager |
Tonino Testa | Crew | Sound | Sound |
 Andrea Esterhazy | Cast | Actor | Minister of Defense |
 Anthony Quinn | Cast | Actor | Bruno Manzini |
 Attilio Dottesio | Cast | Actor | Party Guest of Manzini's (uncredited) |
 Christopher Lee | Cast | Actor | Prince Baldasar, the Director of Counterintelligence |
 Claudia Cardinale | Cast | Actress | Elena Leporello |
 Cleavon Little | Cast | Actor | Major Carl Malinowski, USMC |
 Eli Wallach | Cast | Actor | General Leporello |
 Fortunato Arena | Cast | Actor | General Pantaleone |
 Franco Nero | Cast | Actor | Carabinieri Colonel Dante Matucci |
 Jacques Herlin | Cast | Actor | Woodpecker |
 John Stacy | Cast | Actor | Concierge |
 John Steiner | Cast | Actor | Captain Roditi |
 Larry Dolgin | Cast | Actor | Captain Roditi (voice) (uncredited) |
 Margherita Horowitz | Cast | Actress | Wife of Minister of Defense (uncredited) |
 Marino Masé | Cast | Actor | Captain Rigoli |
 Martin Balsam | Cast | Actor | Captain Steffanelli |
 Nello Pazzafini | Cast | Actor | Manzini's Bodyguard (uncredited) |
 Omero Capanna | Cast | Actor | Hitman (uncredited) |
 Paul L. Smith | Cast | Actor | The Surgeon |
 Renzo Palmer | Cast | Actor | Carabinieri Major Giorgione |
 Sybil Danning | Cast | Actress | Lili Anders |
 Tom Felleghy | Cast | Actor | Man at Funeral (uncredited) |
 Alfonso Giganti | Cast | Actor | Man at Funeral (uncredited) |
Tony Brandt | Cast | Actor | Gianni Bandanelli, Pantaleone's Lawyer (uncredited) |
 Anita Strindberg | Cast | Actress | Princess Faubiani |
 Amedeo Salamon | Cast | Banquet Guest (uncredited) | |
Gitte Lee | Cast | Princess Baldasar (uncredited) | |
 Frank Nuyen | Cast | Actor | Man at Pantaleone's funeral (uncredited) |
| Person | Type | Job | Role(s) |
