| Person | Type | Job | Role(s) |
|---|---|---|---|
 Aurelio Crugnola | Crew | Art | Art Direction |
 Buddy Van Horn | Crew | Crew | Stunts |
Charles Waldo | Crew | Costume & Make-Up | Wardrobe Designer |
 Clint Eastwood | Crew | Directing | Director |
 Craig Huston | Crew | Directing | Second Assistant Director |
David Brown | Crew | Production | Executive Producer |
Ferris Webster | Crew | Editing | Editor |
Frank Redman | Crew | Camera | Assistant Camera |
Frank Stanley | Crew | Camera | Director of Photography |
Fred R. Simpson | Crew | Production | Unit Production Manager |
George C. Webb | Crew | Art | Art Direction |
Glenn Wright | Crew | Costume & Make-Up | Costume Supervisor |
Hal Dresner | Crew | Writing | Screenplay |
Jack Kosslyn | Crew | Crew | Dialogue Coach |
 James Fargo | Crew | Directing | First Assistant Director |
Joe Chevalier | Crew | Art | Property Master |
Joe McKinney | Crew | Costume & Make-Up | Makeup Artist |
 John Williams | Crew | Sound | Original Music Composer |
Laura Fattori | Crew | Production | Production Secretary |
Richard C. Meyer | Crew | Editing | Assistant Editor |
 Richard D. Zanuck | Crew | Production | Executive Producer |
Robert Daley | Crew | Production | Producer |
Robert L. Hoyt | Crew | Sound | Sound Recordist |
Roberto Silvi | Crew | Editing | Assistant Editor |
Trevanian | Crew | Writing | Novel, Screenplay |
Wallace Worsley Jr. | Crew | Production | Unit Production Manager |
Warren Murphy | Crew | Writing | Screenplay |
Tom Moore | Crew | Directing | Script Supervisor |
Don Christie | Crew | Camera | Still Photographer |
Tim Ryan | Crew | Camera | Grip |
James R. Alexander | Crew | Sound | Sound |
Victor Tourjansky | Crew | Directing | Second Assistant Director |
Bona Nasalli-Rocca | Crew | Costume & Make-Up | Wardrobe Intern |
Frank Balchus | Crew | Costume & Make-Up | Wardrobe Intern |
Agnese Panarotto | Crew | Costume & Make-Up | Hairstylist |
Carol Rydall | Crew | Production | Production Secretary |
Jim Porter | Crew | Camera | Best Boy Grip |
Larry Bird | Crew | Art | Property Master |
Nefte Riccò | Crew | Costume & Make-Up | Seamstress |
William N. Clark | Crew | Camera | Camera Operator |
Bud Howell | Crew | Camera | Key Grip |
Buddy Bowles | Crew | Lighting | Gaffer |
Mario Pisani | Crew | Production | Unit Manager |
Sheila Mason | Crew | Costume & Make-Up | Wardrobe Intern |
Art Rimdzius | Crew | Crew | Transportation Captain |
Ben McMahan | Crew | Crew | Special Effects |
Bruce Catlin | Crew | Camera | Assistant Camera |
Janice Clark | Crew | Costume & Make-Up | Hairstylist |
 John Dwyer | Crew | Art | Set Decoration |
 Brenda Venus | Cast | Actress | George |
 Candice Rialson | Cast | Actress | Art Student |
Clint Eastwood | Cast | Actor | Jonathan Hemlock |
Elaine Shore | Cast | Actress | Miss Cerberus |
Frank Redman | Cast | Actor | Wormwood |
 George Kennedy | Cast | Actor | Ben Bowman |
 Gregory Walcott | Cast | Actor | Pope |
 Heidi Brühl | Cast | Actress | Mrs. Montaigne |
 Jack Cassidy | Cast | Actor | Miles Mellough |
Jack Kosslyn | Cast | Actor | Reporter |
 Jean-Pierre Bernard | Cast | Actor | Montaigne |
 Philippe Mareuil | Cast | Actor | Doublure voix française de Jack Cassidy |
 Reiner Schöne | Cast | Actor | Freytag |
Susan Morgan Cooper | Cast | Actress | Buns |
 Thayer David | Cast | Actor | Dragon |
 Vonetta McGee | Cast | Actress | Jemima Brown |
Walter Kraus | Cast | Actor | Kruger |
Dan Howard | Cast | Dewayne | |
Michael Grimm | Cast | Actor | Meyer |
Jack Frey | Cast | Actor | Cab Driver |
Siegfried Wallach | Cast | Actor | Hotel Manager |
| Person | Type | Job | Role(s) |
