| Person | Type | Job | Role(s) |
|---|---|---|---|
 Diego Gómez Sempere | Crew | Production | Production Manager |
 Edward Scaife | Crew | Camera | Director of Photography |
Euan Lloyd | Crew | Production | Producer |
Herbert Smith | Crew | Art | Art Direction |
 James Griffith | Crew | Writing | Writer |
Javier Gordillo | Crew | Production | Unit Manager |
 John Glen | Crew | Directing | Second Unit Director, Supervising Editor |
John Harris | Crew | Camera | Camera Operator |
José Antonio Sánchez | Crew | Costume & Make-Up | Makeup Artist |
José María Ochoa | Crew | Directing | Assistant Director |
 Louis L'Amour | Crew | Writing | Novel |
Roy Budd | Crew | Sound | Music |
 Sam Wanamaker | Crew | Directing | Director |
Scot Finch | Crew | Writing | Writer |
Ramón de Diego | Crew | Costume & Make-Up | Makeup Artist |
Tadeo Villalba | Crew | Production | Production Supervisor |
Kay Rawlings | Crew | Directing | Continuity |
Agustín Jiménez | Crew | Costume & Make-Up | Wardrobe Designer |
Wally Milner | Crew | Sound | Sound Mixer |
Germán Quejido Perrucha | Crew | Art | Property Master |
Kit West | Crew | Crew | Special Effects |
Alan Killick | Crew | Editing | Editor |
Len Abbott | Crew | Sound | Sound Mixer |
Ronnie Bear | Crew | Production | Production Supervisor |
 Bessie Love | Cast | Actress | Mrs. Frost |
Cass Martin | Cast | Actor | Sanchez |
 Daliah Lavi | Cast | Actress | Rosita |
 Dan van Husen | Cast | Actor | Dutch |
 David Ladd | Cast | Actor | Caxton |
 Jeff Corey | Cast | Actor | Merridew |
 Jo Ann Pflug | Cast | Actress | Christina |
 José Nieto | Cast | Actor | General |
 Julián Mateos | Cast | Actor | Recalde |
 Leonard Nimoy | Cast | Actor | Miller |
 Michael Delano | Cast | Actor | Rio |
 Richard Crenna | Cast | Actor | Cowan |
 Robert Logan | Cast | Actor | Oley |
 Yul Brynner | Cast | Actor | Catlow |
John Clark | Cast | Actor | Keleher |
| Person | Type | Job | Role(s) |
