| Person | Type | Job | Role(s) |
|---|---|---|---|
 Adriana Novelli | Crew | Editing | Supervising Editor |
 Alberto Grimaldi | Crew | Production | Producer, Presenter |
Aldo Ricci | Crew | Camera | Camera Operator |
 Alessandro Alessandroni | Crew | Sound | Musician |
Alfredo Fraile | Crew | Production | Executive Producer |
Amedeo Alessi | Crew | Costume & Make-Up | Makeup Artist |
Arturo González | Crew | Production | Producer, Presenter |
 Benito Stefanelli | Crew | Crew | Stunt Coordinator |
 Bruno Nicolai | Crew | Sound | Music Director |
 Carlo Leva | Crew | Art | Assistant Art Director |
 Carlo Simi | Crew | Costume & Make-Up | Costume Design, Settings |
Eduardo Noé | Crew | Camera | Camera Operator |
 Ennio Morricone | Crew | Sound | Original Music Composer, Conductor |
Eros Bacciucchi | Crew | Crew | Special Effects |
Eugenio Alabiso | Crew | Editing | Editor |
 Fernando Di Leo | Crew | Crew | Additional Writing, Assistant Director |
Fernando Rossi | Crew | Production | Production Supervisor |
Fulvio Morsella | Crew | Writing | Story |
Giorgio Serrallonga | Crew | Editing | Editor |
Giovanni Corridori | Crew | Crew | Special Effects |
Guido Ortenzi | Crew | Sound | Sound |
Juan Farsac | Crew | Costume & Make-Up | Makeup Artist |
Julio Ortas | Crew | Camera | Second Unit Director of Photography, Second Unit Director |
Julio Sempere | Crew | Directing | Assistant Director |
 Luciano Vincenzoni | Crew | Writing | Screenplay |
Manuel Baquero | Crew | Crew | Special Effects |
Manuel Castedo | Crew | Production | Production Supervisor |
 Massimo Dallamano | Crew | Camera | Director of Photography |
Michele Lacerenza | Crew | Sound | Musician |
 Nosher Powell | Crew | Crew | Stunts |
Oscar De Arcangelis | Crew | Sound | Sound |
Ottavio Oppo | Crew | Production | Production Manager |
Rafael Ferri | Crew | Art | Assistant Decorator |
 Sergio Donati | Crew | Crew | Additional Writing |
 Sergio Leone | Crew | Directing | Director, Screenplay, Story |
 Tonino Valerii | Crew | Directing | Assistant Director |
Norberto Solino | Crew | Production | Production Supervisor |
Rick Lester | Crew | Crew | Stunts |
Rino Carboni | Crew | Costume & Make-Up | Makeup Department Head |
Lothar Winkler | Crew | Camera | Still Photographer |
Mariano Canales | Crew | Directing | Script Supervisor |
 Antonio Palombi | Crew | Production | Production Secretary |
Maria Luisa Rosen | Crew | Directing | Continuity |
Isidro Muro | Crew | Camera | First Assistant Camera |
Nino Culasso | Crew | Sound | Musician |
Domenico Parrello | Crew | Camera | Grip |
 Igino Lardani | Crew | Art | Title Designer |
Cantori Moderni Di Alessandroni | Crew | Sound | Musician |
Ángel Cabero | Crew | Art | Settings |
Montoro | Crew | Art | Settings |
Isabel Mellado | Crew | Costume & Make-Up | Assistant Makeup Artist |
Luis Beltrán | Crew | Crew | Stunts, Local Casting |
Mario Lommi | Crew | Camera | Assistant Camera |
Bruno Battisti D'Amario | Crew | Sound | Musician |
Maurizio Graf | Crew | Sound | Musician |
Aldo Ricci | Cast | (uncredited) | |
 Aldo Sambrell | Cast | Actor | Cuchillo |
 Antonio Molino Rojo | Cast | Actor | Frisco, Member of Indio's Gang (uncredited) |
Benito Stefanelli | Cast | Actor | Luke 'Hughie' |
 Bruno Corazzari | Cast | Actor | Poker Player (uncredited) |
Carlo Simi | Cast | Actor | El Paso Bank Manager (uncredited) |
 Clint Eastwood | Cast | Actor | Manco |
 Dante Maggio | Cast | Actor | Carpenter in Cell with El Indio |
Edmondo Tieghi | Cast | 2nd Agua Caliente Villager Watching Monco (uncredited) | |
 Enrique Navarro | Cast | (uncredited) | |
Fernando Di Leo | Cast | Actor | Cigar Smoking Card Player (uncredited) |
 Frank Braña | Cast | Actor | Blackie, Member of Indio's Gang (uncredited) |
 Gian Maria Volonté | Cast | Actor | El Indio |
Giovanni Tarallo | Cast | Actor | Santa Cruz Telegraphist |
 Guillermo Méndez | Cast | Actor | White Rocks Sheriff (uncredited) |
 Jesús Guzmán | Cast | Actor | Carpetbagger on Train (uncredited) |
 Joseph Egger | Cast | Actor | Old Prophet |
 José Canalejas | Cast | Actor | Chico, Member of Indio's Gang (uncredited) |
José Terrón | Cast | Actor | Guy Calloway, Mortimer's 1st Criminal (uncredited) |
 Klaus Kinski | Cast | Actor | Juan Wild - The Hunchback |
 Kurt Zips | Cast | Actor | Hotel Manager (uncredited) |
 Lee Van Cleef | Cast | Actor | Col. Douglas Mortimer |
 Lorenzo Robledo | Cast | Actor | Tomaso, Indio's Traitor |
 Luigi Pistilli | Cast | Actor | Groggy, Member of Indio's Gang |
Mara Krupp | Cast | Actress | Mary |
 Mario Brega | Cast | Actor | Niño, Member of Indio's Gang |
 Mario Meniconi | Cast | Actor | Train Conductor |
Panos Papadopulos | Cast | Actor | Sancho Perez, Member of Indio's Gang |
 Peter Lee Lawrence | Cast | Actor | Mortimer's Brother-in-Law (uncredited) |
Rafael López | Cast | Actor | (uncredited) |
 Ricardo Palacios | Cast | Actor | Tucumcari Saloon Keeper (uncredited) |
 Roberto Camardiel | Cast | Actor | Tucumcari Station Clerk |
 Román Ariznavarreta | Cast | Actor | Half-Shaved Bounty Hunter (uncredited) |
 Rosemary Dexter | Cast | Actress | Mortimer's Sister (uncredited) |
Sergio Leone | Cast | Actor | Whistling Bounty Hunter (voice) (uncredited) |
 Sergio Mendizábal | Cast | Actor | Tucumcari Bank Manager |
 Tomás Blanco | Cast | Actor | Tucumcari Sheriff |
 Werner Abrolat | Cast | Actor | Slim, Member of Indio's Gang (uncredited) |
Antoñito Ruiz | Cast | Actor | Fernando (uncredited) |
Francesca Leone | Cast | Actress | Tomaso's Baby (uncredited) |
 José Marco | Cast | Actor | 'Baby' Red Cavanaugh (uncredited) |
Antonio Palombi | Cast | Bartender (uncredited) | |
Diana Rabito | Cast | Callaway's Beautiful Girl in Tub | |
 Luis Rodríguez | Cast | Manuel, Member of Indio's Gang | |
Joseph Bradley | Cast | El Paso Tavern Keeper (uncredited) | |
 Eduardo García | Cast | Member of Indio's Gang (uncredited) | |
Diana Faenza | Cast | Tomaso's Wife (uncredited) | |
Enrique Santiago | Cast | Miguel, Member of Indio's Gang (uncredited) | |
Maurizio Graf | Cast | The Balladeer (voice) (uncredited) | |
| Person | Type | Job | Role(s) |
