| Person | Type | Job | Role(s) |
|---|---|---|---|
 Adriana Novelli | Crew | Editing | Supervising Editor |
 Alberto Grimaldi | Crew | Production | Producer |
 Bruno Nicolai | Crew | Sound | Music Director |
 Carlo Carlini | Crew | Camera | Director of Photography |
 Carlo Leva | Crew | Art | Set Decoration |
 Carlo Simi | Crew | Costume & Make-Up | Costume Design, Set Decoration |
 Ennio Morricone | Crew | Sound | Original Music Composer |
Fernando Morandi | Crew | Writing | Story |
 Franco Solinas | Crew | Writing | Story |
Gaby Peñalba | Crew | Editing | Editor |
Nicola Tamburo | Crew | Art | Set Decoration |
Nino Zanchin | Crew | Directing | Assistant Director |
 Sergio Donati | Crew | Writing | Screenplay |
 Sergio Sollima | Crew | Writing | Screenplay, Director |
 Tulio Demicheli | Crew | Production | Producer |
Rino Carboni | Crew | Costume & Make-Up | Makeup Artist |
Pietro Spadoni | Crew | Sound | Sound |
 Antonio Casas | Cast | Actor | Brother Smith & Wesson |
 Benito Stefanelli | Cast | Actor | Jess |
 Fernando Bilbao | Cast | Actor | Widow's ranch hand |
 Fernando Sancho | Cast | Actor | Capt. Segura |
 Frank Braña | Cast | Actor | Widow's ranch hand |
 Gérard Herter | Cast | Actor | Baron von Schulenberg |
 Lee Van Cleef | Cast | Actor | Jonathan Corbett |
 Lorenzo Robledo | Cast | Actor | Pioneer |
 Luis Barboo | Cast | Actor | Widow's ranch hand |
 Luisa Rivelli | Cast | Actress | Lizzie Miller |
 Nello Pazzafini | Cast | Actor | Hondo |
 Nieves Navarro | Cast | Actress | 'The Widow' |
 Roberto Camardiel | Cast | Actor | Sheriff Jellicol |
 Romano Puppo | Cast | Actor | Rocky |
 Tom Felleghy | Cast | Actor | Mr. Miller |
 Tomas Milian | Cast | Actor | Manuel 'Cuchillo' Sanchez |
 Walter Barnes | Cast | Actor | Brokston |
 Ángel del Pozo | Cast | Actor | Chet Miller |
 Manolita Barroso | Cast | Actress | Rosita, Cuchillo's wife |
 Quinto Gambi | Cast | Actor | (uncredited) |
| Person | Type | Job | Role(s) |
