 | Clint Eastwood als Joe |
 | Marianne Koch als Marisol |
 | Gian Maria Volonté als Ramón Rojo |
 | Wolfgang Lukschy als John Baxter |
 | Sieghardt Rupp als Esteban Rojo |
 | Joseph Egger als Piripero |
 | Antonio Prieto als Don Benito Rojo / Don Miguel Rojo |
 | José Calvo als Silvanito |
 | Margarita Lozano als Consuelo Baxter |
 | Daniel Martín als Julián |
 | Benito Stefanelli als Rubio |
 | Mario Brega als Chico |
 | Bruno Carotenuto als Antonio Baxter |
 | Aldo Sambrell als Rojo Gang Member |
 | Lorenzo Robledo als Baxter Gunman #1 (uncredited) |
 | Antonio Molino Rojo als Baxter Gunman #2 (uncredited) |
 | Luis Barboo als Baxter Gunman #3 (uncredited) |
 | Juan Cortés als Cavalry Captain (uncredited) |
 | William R. Thompkins als Baxter Gunman (uncredited) |
 | Fernando Sánchez Polack als Rojo Gang Member Crushed by Wine Cask (uncredited) |
 | José Canalejas als Rojo Gang Member (uncredited) |
 | Jose Halufi als Rojo Gang Member (uncredited) |
 | Nino Del Arco als Jesus (uncredited) |
| Antonio Moreno als Juan De Dios (uncredited) |
 | Frank Braña als Baxter Gunman (uncredited) |
 | Álvaro de Luna als Rojo Gang Member (uncredited) |
 | Lee Miller als Man at Bar (uncredited) |
 | José Orjas als (uncredited) |
| Manuel Peña als (uncredited) |
 | Antonio Pica als Rojo Gang Member (uncredited) |
 | Julio Pérez Tabernero als Baxter Gunman (uncredited) |
 | José Riesgo als Mexican Cavalry Captain (uncredited) |
 | Umberto Spadaro als Miguel - Rojo Gunman (uncredited) |
| Peter Tevis als The Balladeer (voice) (uncredited) |
| Edmondo Tieghi als Mexican Soldier (uncredited) |
 | Antonio Vico als (uncredited) |
 | Luis Rodríguez als Rojo Gang Member (uncredited) |
 | Antonio Montoya als Rojo Gang Member (uncredited) |
| Giorgio Papi | Producer |
| Arrigo Colombo | Producer |
| Massimo Dallamano | Director of Photography |
| Federico G. Larraya | Director of Photography |
| Alfonso Santacana | Editor |
| Roberto Cinquini | Editor |
| Sergio Leone | Director |
| Ennio Morricone | Original Music Composer |
| Carlo Simi | Art Direction |
| Carlo Simi | Set Decoration |
| Sam Watkins | Makeup Artist |
| Ramón Crespo | Production Manager |
| Franco Giraldi | Assistant Director |
| Julio Sempere | Assistant Director |
| Alberto Gutiérrez | Makeup Artist |
| Franco Palaggi | Production Manager |
| Dolores Clavel | Hairstylist |
| Jaime Comas Gil | Production Manager |
| Tonino Valerii | Assistant Director |
| Sigfrido Burman | Set Decoration |
| Günter Raguse | Production Manager |
| Francisco Rodríguez Asensio | Set Decoration |
| Elio Pacella | Sound |
| Mario Caiano | Assistant Director |
| Mark Lowell | Dialogue |
| Sergio Leone | Screenstory |
| Domenico Parrello | Second Assistant Camera |
| Igino Lardani | Animation |
| Rafael Pérez Murcia | Assistant Set Decoration |
| Benito Stefanelli | Stunts |
| Ramón Sempere | First Assistant Camera |
| Eugenio Villar | Production Assistant |
| Fernando Rossi | Unit Manager |
| William R. Thompkins | Stunts |
| Ennio Morricone | Conductor |
| Alessandro Alessandroni | Music Arranger |
| Franco Giraldi | Second Unit Director |
| Luis Ocaña | Property Master |
| Benito Stefanelli | Stunt Coordinator |
| Eduardo Noé | Second Assistant Camera |
| William R. Thompkins | Master at Arms |
| William R. Thompkins | Technical Advisor |
| Víctor Andrés Catena | Screenplay |
| Giovanni Corridori | Special Effects |
| Cantori Moderni Di Alessandroni | Theme Song Performance |
| Peter Tevis | Theme Song Performance |
| José Luis Pérez | Assistant Makeup Artist |
| Nosher Powell | Stunts |
| María Casado | Wardrobe Designer |
| Manuel Baquero | Special Effects |
| Marta Pons | Production Assistant |
| Stelvio Massi | Camera Operator |
| José María Sánchez | Camera Operator |
| Carlo Simi | Costumer |
| Jaime Comas Gil | Screenplay |
| María Antonia Puerta | Script Supervisor |
| Pietro Santini | Production Secretary |
| Alessandro Alessandroni | Musician |
| Michele Lacerenza | Musician |
| Adriano Bolzoni | Screenstory |
| Sergio Leone | Screenplay |
| Pietro Santini | Production Assistant |
| Tilde Watson | Script Supervisor |
| Jerónimo Montoro | Production Assistant |
| Víctor Andrés Catena | Screenstory |
| José María Sánchez | Makeup Department Head |
| Alicia Castillo | Assistant Editor |
| Anselmo Zabala | Unit Production Manager |
| Adolfo Cofiño | Assistant Set Decoration |
| Julio Wizuete | Still Photographer |
| Géneviève Hersent | Publicist |
| Duccio Tessari | Screenplay |
| Tonino Valerii | Screenplay |
| Fernando Di Leo | Screenplay |
| Ryūzō Kikushima | Original Story |
| Akira Kurosawa | Original Story |
| Igino Lardani | Title Designer |
