 | Terence Hill als Joe Thanks |
 | Miou-Miou als Lucy |
 | Robert Charlebois als Bill Locomotiva |
 | Patrick McGoohan als Major Cabot |
 | Raimund Harmstorf als Sergeant Milton |
 | Piero Vida als Jacky Roll |
 | Rik Battaglia als Captain |
 | Mario Valgoi als Thomas Trader |
 | Mario Brega als Coach Driver |
 | Jean Martin als Colonel Pembroke |
 | Klaus Kinski als Doc Foster |
 | Miriam Mahler als Pembroke's Daughter |
 | Clara Colosimo als La ruffiana |
 | Carla Cassola als Prostitute |
 | Fernando Cerulli als Her husband |
 | Vittorio Fanfoni als Jail guard |
 | Benito Stefanelli als Mortimer |
 | Renato Baldini als Sheriff in saloon |
 | Roy Bosier als Jeremy |
 | Gérard Boucaron als Village Idiot |
 | Armando Bottin als Mortimer Henchman |
 | Valerio Ruggeri |
 | Friedrich von Ledebur als Don Felipe |
 | Deogratias Huerta als Union Sergeant |
 | Edmondo Tieghi |
 | Karl Braun als Poker Player (uncredited) |
 | Bruno Di Luia als Soldier (uncredited) |
| Lina Franchi als Mary Gomez, Prostitute (uncredited) |
 | Furio Meniconi als (uncredited) |
 | Tommaso Palladino als Man at Brothel (uncredited) |
 | Desmond Thompson als Sheriff of Village (uncredited) |
 | Pietro Torrisi als Mortimer Henchman (uncredited) |
 | Natale Tulli als Man at Brothel (uncredited) |
| Damiano Damiani | Director |
| Damiano Damiani | Screenplay |
| Ernesto Gastaldi | Screenplay |
| Fulvio Morsella | Screenplay |
| Claudio Mancini | Producer |
| Fulvio Morsella | Producer |
| Sergio Leone | Executive Producer |
| Ennio Morricone | Original Music Composer |
| Giuseppe Ruzzolini | Director of Photography |
| Nino Baragli | Editor |
| Ernesto Gastaldi | Story |
| Fulvio Morsella | Story |
| Francesco Bronzi | Production Design |
| Carlo Simi | Production Design |
| Sergio Leone | Assistant Director |
| Sergio Leone | Idea |
| Jean Gontier | Co-Producer |
| Francesco Bronzi | Art Direction |
| Carlo Simi | Art Direction |
| Massimo Tavazzi | Set Decoration |
| Franco Carretti | Costume Design |
| Franco Coduti | Unit Manager |
| Claudio Cuomo | Unit Manager |
| Claudio Giugno | Production Supervisor |
| Diego Gómez Sempere | Production Manager |
| Vasco Mafera | Unit Manager |
| Claudio Mancini | General Manager |
| Stefano Rolla | First Assistant Director |
| Stefano Vicario | Second Assistant Director |
| Sergio Leone | Director of Operations |
| Giuliano Montaldo | Second Unit Director |
| Vittoria Vigorelli | Script Supervisor |
| Pierantonio Mecacci | Makeup Artist |
| Maurizio Giustini | Makeup Artist |
| Gaetano Testa | Sound |
| Roberto Arcangeli | Sound Effects |
| Fausto Ancillai | Sound Mixer |
| Giovanni Corridori | Special Effects |
| Orsola Liberati | Seamstress |
| Benito Stefanelli | Master at Arms |
