Epic film of the legendary Spanish hero, Rodrigo Diaz ("El Cid" to his followers), who, without compromising his strict sense of honour, still succeeds in taking the initiative and driving the Moors from Spain.
| Writing | Ben Barzman | Screenplay |
| Writing | Fredric M. Frank | Screenplay |
| Directing | Anthony Mann | Director |
| Writing | Fredric M. Frank | Story |
| Writing | Philip Yordan | Screenplay |
| Camera | Robert Krasker | Director of Photography |
| Directing | José María Ochoa | Assistant Director |
| Art | John Moore | Set Decoration |
| Editing | Robert Lawrence | Editor |
| Costume & Make-Up | Mario Van Riel | Makeup Artist |
| Sound | Miklós Rózsa | Original Music Composer |
| Costume & Make-Up | Veniero Colasanti | Costume Design |
| Art | John Moore | Production Design |
| Production | Jaime Prades | Associate Producer |
| Costume & Make-Up | Grazia De Rossi | Hairstylist |
| Production | Guy Luongo | Production Manager |
| Directing | José López Rodero | Assistant Director |
| Production | Samuel Bronston | Producer |
| Production | Leon Chooluck | Production Manager |
| Production | Michał Waszyński | Associate Producer |
| Art | Veniero Colasanti | Production Design |
| Art | Veniero Colasanti | Set Decoration |
| Costume & Make-Up | John Moore | Costume Design |
| Crew | Diego Fabbri | Additional Writing |
| Directing | Yakima Canutt | Second Unit Director |
| Camera | Manuel Berenguer | Second Unit Director of Photography |
| Directing | Luciano Sacripanti | First Assistant Director |
| Directing | Pat Miller | Script Supervisor |
| Sound | Jack Solomon | Sound Recordist |
| Sound | Gordon K. McCallum | Sound Re-Recording Mixer |
| Sound | Verna Fields | Sound Editor |
| Sound | Edna Bullock | Music Editor |
| Art | Maciek Piotrowski | Title Illustration |
| Art | Maciek Piotrowski | Draughtsman |
| Art | Stanley Detlie | Property Master |
| Camera | Carl Gibson | Key Grip |
| Editing | Magdalena Paradell | Assistant Editor |
| Crew | Alex Weldon | Special Effects |
| Crew | Jack Erickson | Special Effects |
| Camera | John Harris | Camera Operator |
| Costume & Make-Up | Gloria Musetta | Wardrobe Supervisor |
| Lighting | Norton Kurland | Electrician |
| Crew | Jack Williams | Stunts |
| Crew | Joe Canutt | Stunts |
| Crew | Tap Canutt | Stunts |
| Crew | Jerry Brown | Stunts |
| Crew | Buff Brady | Stunts |
| Crew | Miguel Pedregosa | Stunts |
| Crew | Omero Capanna | Stunts |
| Crew | Enzo Musumeci Greco | Stunts |
| Crew | Samuel Bronston | Presenter |
| Sound | Douglas Gamley | Orchestrator |
| Sound | Eugene Zador | Orchestrator |
| Camera | Federico Gómez Grau | Still Photographer |
| Crew | Antonio Bueno | Special Effects Assistant |
| Crew | Antonio Parra | Special Effects Assistant |
| Crew | Antonio Baquero | Special Effects Assistant |
| Crew | Pablo Pérez | Special Effects Assistant |
| Crew | Luis Esquinas Sanchez | Carpenter |
| Art | Julián Martín | Painter |
| Art | Gil Parrondo | Assistant Art Director |
| Art | Francisco Prósper | Construction Coordinator |
| Crew | Emilio Ruiz del Río | Scenic Artist |
| Art | Vicente Sempere Sempere | Assistant Set Decoration |
| Crew | Jose Velazquez | Carpenter |
| Production | Tadeo Villalba | Unit Manager |
