 | Roy Scheider als Jackie Scanlon / 'Juan Dominguez' |
 | Bruno Cremer als Victor Manzon / 'Serrano' |
 | Francisco Rabal als Nilo |
 | Amidou als Kassem / 'Martinez' |
 | Ramon Bieri als Corlette |
 | Peter Capell als Lartigue |
 | Karl John als 'Marquez' |
 | Friedrich von Ledebur als 'Carlos' |
 | Chico Martínez als Bobby del Rios |
 | Joe Spinell als Spider |
| Rosario Almontes als Agrippa |
| Richard Holley als Billy White |
 | Anne-Marie Deschodt als Blanche |
 | Jean-Luc Bideau als Pascal |
 | Jacques François als Lefevre |
 | André Falcon als Guillot |
 | Gerard Murphy als Donnelly |
| Desmond Crofton als Boyle |
| Henry Diamond als Murray |
 | Ray Dittrich als Ben |
| Frank Gio als Marty |
 | Randy Jurgensen als Vinnie |
| Cosmo 'Gus' Allegretti als Carlo Ricci |
| Walon Green | Screenplay |
| William Friedkin | Director |
| Georges Arnaud | Novel |
| John Box | Production Design |
| John M. Stephens | Director of Photography |
| Bud S. Smith | Editor |
| Dick Bush | Director of Photography |
| Gerard Murphy | Production Manager |
| Robert K. Lambert | Editor |
| Larry Carow | Sound Editor |
| Colin C. Mouat | Sound Editor |
| Robert Knudson | Sound Re-Recording Mixer |
| Roy Walker | Art Direction |
| Gary Alexander | Sound Re-Recording Mixer |
| Roger Sword | Sound Editor |
| Bud S. Smith | Associate Producer |
| Aaron Levy | Sound Designer |
| Robert W. Laing | Set Decoration |
| Anthony Powell | Costume Design |
| George Resler | Grip |
| Robert Glass | Sound Re-Recording Mixer |
| Roberto Bakker | Production Manager |
| Gerard Murphy | Unit Manager |
| Nanette Siegert | Production Secretary |
| Marvin Peck | Technical Advisor |
| Bernie Schwartz | Grip |
| Ken Pattenden | Construction Coordinator |
| Richard Tyler | Sound Re-Recording Mixer |
| Jim Sheppherd | Grip |
| Louis De Giamo | Casting Director |
| Albert M. Shapiro | Second Assistant Director |
| Barry Bedig | Property Master |
| Bill Kenney | Grip |
| Gaylin P. Schultz | Key Grip |
| Bud Ekins | Stunt Coordinator |
| Doug Millett | Construction Coordinator |
| Mike Weathers | Best Boy Lighting Technician |
| Henri-Georges Clouzot | Thanks |
| Miguel Gil | Second Assistant Director |
| Pat Blymyer | Gaffer |
| Mark Johnson | Second Assistant Director |
| Jean-Louis Ducarme | Sound Recordist |
| Lesley W. Tomkins | Draughtsman |
| Newt Arnold | First Assistant Director |
| Robert Norin | Makeup Artist |
| Ned Humphreys | Assistant Editor |
| Robert K. Lambert | Music Editor |
| Richard Holley | Pilot |
| Paul Roedl | Assistant Accountant |
| Charles A. Ogle | Production Accountant |
| Cynthia Scheider | Assistant Editor |
| Gene Anderson | Assistant Property Master |
| Jere Huggins | Assistant Editor |
| Charles L. Campbell | Sound Effects Editor |
| John Franco | Script Supervisor |
| Scott Matthews | Other |
| Toni St. Clair Lilly | Other |
| Ben Nye Jr. | Makeup Artist |
| Jean-Guy Jacques | Title Designer |
| Luis Llosa | Producer's Assistant |
| Ron Nagle | Other |
| John Norin | Makeup Artist |
| Verne Caruso | Hairdresser |
| Whitey Ellison | Transportation Coordinator |
| Marv Ystrom | Visual Effects |
| Dan Perri | Title Designer |
| William Friedkin | Producer |
| Christopher Franke | Original Music Composer |
| Edgar Froese | Original Music Composer |
| Nick Dimitri | Stunts |
| William Friedkin | Screenplay |
