| Person | Type | Job | Role(s) |
|---|---|---|---|
 Agenore Incrocci | Crew | Writing | Screenplay |
 Alberto Grimaldi | Crew | Production | Producer |
 Aldo Ciorba | Crew | Sound | Foley Artist |
Aldo Pomilia | Crew | Production | Production Supervisor |
 Alessandro Alessandroni | Crew | Sound | Music Arranger, Musician |
 Angelo Novi | Crew | Camera | Still Photographer |
 Benito Stefanelli | Crew | Crew | Stunts, Stunt Coordinator |
 Bruno Nicolai | Crew | Sound | Music Director |
 Carlo Leva | Crew | Art | Assistant Art Director |
 Carlo Simi | Crew | Art | Production Design, Costume Design |
Elio Pacella | Crew | Sound | Sound Engineer |
 Ennio Morricone | Crew | Sound | Original Music Composer |
Eros Bacciucchi | Crew | Crew | Special Effects |
Eugenio Alabiso | Crew | Editing | Editor |
 Fabio Testi | Crew | Crew | Stunts |
Fabrizio Gianni | Crew | Directing | Assistant Director |
Federico Tofi | Crew | Production | Production Assistant |
Franco De Gemini | Crew | Sound | Musician |
 Franco Di Giacomo | Crew | Camera | Camera Operator |
 Furio Scarpelli | Crew | Writing | Screenplay |
 Giancarlo Santi | Crew | Directing | Assistant Director |
Giovanni Corridori | Crew | Crew | Special Effects |
 Gray Frederickson | Crew | Production | Production Manager |
José Antonio Pérez Giner | Crew | Production | Production Manager |
 John Landis | Crew | Crew | Stunts |
 Luciano Vincenzoni | Crew | Writing | Screenplay, Story |
 Luigi Ciavarro | Crew | Crew | Stunts |
Michele Lacerenza | Crew | Sound | Musician |
 Mickey Knox | Crew | Writing | Dialogue |
Nicola Samale | Crew | Sound | Musician |
 Nino Baragli | Crew | Editing | Editor |
 Romano Puppo | Crew | Crew | Stunts |
 Román Ariznavarreta | Crew | Crew | Stunts |
 Sergio Donati | Crew | Crew | Additional Dialogue |
 Sergio Leone | Crew | Writing | Screenplay, Director, Story |
 Sergio Salvati | Crew | Camera | First Assistant Camera |
 Tonino Delli Colli | Crew | Camera | Director of Photography |
Vittorio De Sisti | Crew | Sound | Sound Engineer |
Rino Carboni | Crew | Costume & Make-Up | Makeup Artist |
Nazzareno Neri | Crew | Editing | Colorist |
Fausto Ancillai | Crew | Sound | Sound Mixer |
John O'Neill | Crew | Sound | Musician |
Serena Canevari | Crew | Directing | Script Supervisor |
Carlo Bartolini | Crew | Production | Production Assistant |
Antonio Baquero | Crew | Crew | Special Effects |
 Antonio Palombi | Crew | Production | Production Secretary |
Valentino Pelizzi | Crew | Crew | Stunts |
Vincenzo Restuccia | Crew | Sound | Musician |
Luigi Corbo | Crew | Production | Production Secretary |
E. Wolf Ferrari | Crew | Sound | Musician |
Francesco Catania | Crew | Sound | Musician |
Gianna Spagnolo | Crew | Sound | Musician |
Enzo Gioieni | Crew | Sound | Musician |
Edda Dell'Orso | Crew | Sound | Musician |
Nino Dei | Crew | Sound | Musician |
Franco Cosacchi | Crew | Sound | Musician |
Rino Todero | Crew | Costume & Make-Up | Hairdresser |
Italo Cammarota | Crew | Sound | Musician |
Domenico Parrello | Crew | Camera | Grip |
 Igino Lardani | Crew | Art | Title Designer |
Cantori Moderni Di Alessandroni | Crew | Sound | Musician |
Fernando Cinquini | Crew | Production | Production Manager |
Bruno Battisti D'Amario | Crew | Sound | Musician |
 Al Mulock | Cast | Actor | One-Armed Bounty Hunter |
 Alberigo Donadeo | Cast | Actor | Spectator Before Hanging (uncredited) |
 Aldo Giuffrè | Cast | Actor | Alcoholic Union Captain |
 Aldo Sambrell | Cast | Actor | Member of Angel Eyes' Gang |
 Amerigo Castrighella | Cast | Actor | 2nd Sombrero Onlooker at Tuco's 1st Hanging (uncredited) |
Angelo Novi | Cast | Actor | Monk |
 Antonio Casale | Cast | Actor | Bill Carson / Jackson |
 Antonio Casas | Cast | Actor | Stevens |
 Antonio Molino Rojo | Cast | Actor | Captain Harper |
 Attilio Dottesio | Cast | Actor | 3rd Sombrero Onlooker at Tuco's 1st Hanging (uncredited) |
 Axel Darna | Cast | Dying Confederate Soldier (uncredited) | |
 Aysanoa Runachagua | Cast | Actor | Pistolero Recruited by Tuco in the Cave (uncredited) |
Benito Stefanelli | Cast | Actor | Member of Angel Eyes' Gang |
 Chelo Alonso | Cast | Actress | Stevens' Wife (uncredited) |
 Claudio Scarchilli | Cast | Actor | Tuco Henchman |
 Clint Eastwood | Cast | Actor | Blondie |
 Eli Wallach | Cast | Actor | Tuco Ramirez |
 Enzo Petito | Cast | Actor | Storekeeper |
 Fortunato Arena | Cast | Actor | 1st Sombrero Onlooker at Tuco's 1st Hanging (uncredited) |
Franco Tocci | Cast | Union Soldier with Cigar (uncredited) | |
 Frank Braña | Cast | Actor | Bounty Hunter #2 (uncredited) |
 Jesús Guzmán | Cast | Actor | Pardue the Hotel Owner (uncredited) |
José Terrón | Cast | Actor | Thomas 'Shorty' Larson (uncredited) |
 Lee Van Cleef | Cast | Actor | Sentenza / Angel Eyes |
 Livio Lorenzon | Cast | Actor | Baker |
 Lorenzo Robledo | Cast | Actor | Clem |
 Luigi Pistilli | Cast | Actor | Father Pablo Ramirez |
 Mario Brega | Cast | Actor | Corporal Wallace |
 Nazzareno Natale | Cast | Actor | Mexican Bounty Hunter (uncredited) |
 Rada Rassimov | Cast | Actress | Maria |
 Ricardo Palacios | Cast | Actor | Barista a Socorro (uncredited) |
Romano Puppo | Cast | Actor | Member of Angel Eyes' Gang (uncredited) |
Román Ariznavarreta | Cast | Actor | Bounty Hunter (uncredited) |
 Sandro Scarchilli | Cast | Actor | Tuco Henchman |
 Saturno Cerra | Cast | Actor | Bounty Hunter (uncredited) |
 Sergio Mendizábal | Cast | Actor | Blonde Bounty Hunter |
 Silvana Bacci | Cast | Actress | Mexican Woman with Blondie (uncredited) |
 Tony Di Mitri | Cast | Actor | Deputy (uncredited) |
 Veriano Ginesi | Cast | Actor | Bald Onlooker at Tuco's 1st Hanging (uncredited) |
 Víctor Israel | Cast | Actor | Sergeant at Confederate Fort (uncredited) |
Antoñito Ruiz | Cast | Actor | Stevens' Youngest Son (uncredited) |
William Conroy | Cast | Confederate Soldier (uncredited) | |
 Luis Fernández de Eribe | Cast | Actor | Soldier Coat (uncredited) |
Antonio Palombi | Cast | Old Sergeant (uncredited) | |
Joseph Bradley | Cast | Old Soldier (uncredited) | |
Enrique Santiago | Cast | Mexican Bounty Hunter (uncredited) | |
 Gianni Di Segni | Cast | Actor | Deputy at 1st Hanging (uncredited) |
| Person | Type | Job | Role(s) |
