Delos is a futuristic amusement park that features themed worlds—ancient Rome, Medieval times and the Old West—populated by human-like androids. After two patrons have a run-in with a menacing gunslinger in West World, the androids at Delos all begin to malfunction, causing havoc throughout the park.
| Directing | Michael Crichton | Director |
| Production | Leonard Murphy | Casting |
| Art | Herman A. Blumenthal | Art Direction |
| Costume & Make-Up | Frank Griffin | Makeup Artist |
| Costume & Make-Up | Irving Pringle | Makeup Artist |
| Production | Paul Lazarus III | Producer |
| Sound | Fred Karlin | Original Music Composer |
| Editing | David Bretherton | Editor |
| Art | John P. Austin | Set Decoration |
| Crew | Dick Ziker | Stunts |
| Camera | Gene Polito | Director of Photography |
| Directing | Dick Ziker | Action Director |
| Writing | Michael Crichton | Writer |
| Production | Michael I. Rachmil | Associate Producer |
| Costume & Make-Up | Dione Taylor | Hairdresser |
| Production | Claude Binyon Jr. | Unit Production Manager |
| Directing | Claude Binyon Jr. | Assistant Director |
| Directing | James F. Boyle | Second Assistant Director |
| Directing | Craig Huston | Assistant Director Trainee |
| Art | Arthur Friedrich | Property Master |
| Art | Mentor Huebner | Production Illustrator |
| Sound | Richard S. Church | Sound |
| Sound | Harry W. Tetrick | Sound |
| Sound | Ken Dufva | Foley Artist |
| Sound | Van Allen James | Sound Editor |
| Crew | Charles Schulthies | Special Effects |
| Visual Effects | Brent Sellstrom | Visual Effects Coordinator |
| Visual Effects | Matthew Yuricich | Matte Painter |
| Visual Effects | John Whitney Jr. | Imaging Science |
| Crew | Bobby Bass | Stunts |
| Crew | Tony Brubaker | Stunts |
| Crew | Bill Catching | Stunts |
| Crew | Louie Elias | Stunts |
| Crew | Mickey Gilbert | Stunts |
| Crew | Chuck Hayward | Stunt Double |
| Crew | Fred Krone | Stunts |
| Crew | Alan Oliney | Stunts |
| Crew | Charlie Picerni | Stunts |
| Crew | Dean Smith | Stunts |
| Crew | Terry Wilson | Stunts |
| Crew | Dick Ziker | Stunt Coordinator |
| Camera | Joseph A. August Jr. | Camera Operator |
| Lighting | Doug Byers | Electrician |
| Camera | Owen Marsh | Camera Operator |
| Camera | Ronald Vidor | First Assistant Camera |
| Costume & Make-Up | Richard Bruno | Wardrobe Supervisor |
| Costume & Make-Up | Betsy Cox | Wardrobe Master |
| Sound | Fred Karlin | Conductor |
| Sound | Artie Kane | Musician |
| Sound | Tommy Morgan | Musician |
| Sound | Bill Campbell | Musician |
| Crew | Bob Harks | Stand In |
| Crew | Charles Lippincott | Unit Publicist |
