| Person | Type | Job | Role(s) |
|---|---|---|---|
 Burton Wohl | Crew | Writing | Story, Screenplay |
 Dan Perri | Crew | Art | Title Designer |
 Hal Needham | Crew | Crew | Stunts |
 Howard Hawks | Crew | Directing | Director, Producer |
Hoyt Bowers | Crew | Production | Casting |
 Jerry Goldsmith | Crew | Sound | Original Music Composer |
John R. Carter | Crew | Sound | Sound |
John Woodcock | Crew | Editing | Editor |
Leah Rhodes | Crew | Costume & Make-Up | Costume Design |
 Leigh Brackett | Crew | Writing | Screenplay |
Monty Westmore | Crew | Costume & Make-Up | Makeup Designer |
Paul Helmick | Crew | Production | Producer |
Robert Emmet Smith | Crew | Art | Production Design |
 William H. Clothier | Crew | Camera | Director of Photography |
William Kiernan | Crew | Art | Set Decoration |
 Yakima Canutt | Crew | Directing | Second Unit Director |
 Terry Leonard | Crew | Crew | Stunt Double |
 Bill Williams | Cast | Actor | Blackthorne Sheriff Pat Cronin |
 Bob Steele | Cast | Actor | Rio Lobo Deputy (uncredited) |
 Boyd 'Red' Morgan | Cast | Actor | Train Engineer (uncredited) |
 Cap Somers | Cast | Actor | Card Player (uncredited) |
 Christopher Mitchum | Cast | Actor | Seargent Tuscarora Phillips |
 Chuck Courtney | Cast | Actor | Chuck |
 Chuck Hayward | Cast | Actor | (uncredited) |
 Chuck Roberson | Cast | Actor | Corporal in Baggage Car (uncredited) |
Conrad Hool | Cast | Bart (uncredited) | |
 David Huddleston | Cast | Actor | Dr. Ivor Jones |
 Don Barry | Cast | Actor | Feeny - Bartender (uncredited) |
 Edward Faulkner | Cast | Actor | Lt. Harris |
 George Plimpton | Cast | Actor | Fourth Gunman |
 Gregg Palmer | Cast | Actor | Pete - Henchman (uncredited) |
 Hank Worden | Cast | Actor | Hank - Hotel Clerk (uncredited) |
 Jack Elam | Cast | Actor | Phillips |
 Jennifer O'Neill | Cast | Actress | Shasta Delaney |
 Jim Davis | Cast | Actor | Rio Lobo Deputy |
 John Hudkins | Cast | Actor | Rio Lobo Deputy (uncredited) |
 John McKee | Cast | Actor | Rio Lobo Deputy (uncredited) |
 John Wayne | Cast | Actor | Colonel Cord McNally |
 Jorge Rivero | Cast | Actor | Captain Pierre Cordona (Frenchy) |
Lance Hool | Cast | Actor | Picket (uncredited) |
 Michael Jeffers | Cast | Actor | Barfly in Blackthorne (uncredited) |
 Mike Henry | Cast | Actor | Rio Lobo Sheriff 'Blue Tom' Hendricks |
 Peter Jason | Cast | Actor | Lt. Ned Forsythe |
 Robert Donner | Cast | Actor | Deputy Whitey Carter |
 Robert Rothwell | Cast | Actor | Third Gunman |
 Sherry Lansing | Cast | Actress | Amelita |
 Sondra Currie | Cast | Actress | Blackthorne Prostitute (uncredited) |
 Susana Dosamantes | Cast | Actress | Maria Carmen |
 Tommy Tedesco | Cast | Actor | Guitar Player in Opening Credits (uncredited) |
 Victor French | Cast | Actor | Ketcham |
 William H. O'Brien | Cast | Actor | Man in Army Post Saloon (uncredited) |
Danny Sands | Cast | Man Delivering Message to Jail (uncredited) | |
Richard LaMarr | Cast | Man in Army Post Saloon (uncredited) | |
 Jim Prejean | Cast | Actor | Union Soldier |
| Person | Type | Job | Role(s) |
