El Mariachi volgt het spoor van drugsbaas Barrillo door het woeste landschap van Mexico. Barrillo is van plan een coup te plegen tegen de Mexicaanse president. El Mariachi is ingehuurd door de corrupte CIA-agent Sands, die uit is op vergelding tegen zijn grootste vijand.
Nee, helaas is Once Upon a Time in Mexico nog niet beschikbaar op Netflix in Nederland.
| Directing | Robert Rodriguez | Director |
| Editing | Robert Rodriguez | Editor |
| Sound | Robert Rodriguez | Original Music Composer |
| Writing | Robert Rodriguez | Screenplay |
| Crew | Joe Bucaro III | Stunts |
| Crew | Jimmy Ortega | Stunts |
| Art | Robert Rodriguez | Production Design |
| Crew | Sergio Jara | Special Effects Coordinator |
| Production | Elizabeth Avellan | Producer |
| Production | Robert Rodriguez | Producer |
| Sound | Dean Beville | Sound Designer |
| Production | Jane Nerlinger Evans | Executive In Charge Of Production |
| Directing | Korey Scott Pollard | Second Assistant Director |
| Production | Carlos Gallardo | Producer |
| Costume & Make-Up | Carmen de la Torre | Hairstylist |
| Costume & Make-Up | Carmen de la Torre | Makeup Artist |
| Directing | Brian Bettwy | First Assistant Director |
| Art | Carlos Azucena | Assistant Property Master |
| Crew | Brian McNulty | Post Production Supervisor |
| Production | Tony Mark | Co-Producer |
| Production | Mary Vernieu | Casting |
| Sound | Mike Chock | Sound Effects Editor |
| Art | Eva Castro | Set Decoration |
| Costume & Make-Up | Ermahn Ospina | Makeup Department Head |
| Sound | John Dunn | Sound Effects Editor |
| Editing | Charles Ewing Smith | Dialogue Editor |
| Costume & Make-Up | Graciela Mazón | Costume Design |
| Art | Carlos Benassini | Assistant Art Director |
| Sound | Ernesto Muñoz | Boom Operator |
| Production | Sue Jett | Co-Producer |
| Costume & Make-Up | Sandra Migueli | Makeup Artist |
| Production | Tony Mark | Unit Production Manager |
| Sound | Sergio Reyes | Sound Re-Recording Mixer |
| Crew | Mike Reedy | Special Effects Coordinator |
| Art | Melo Hinojosa | Art Direction |
| Art | Patrice Laure | Set Decoration |
| Costume & Make-Up | Roxie Hodenfield | Hair Department Head |
| Art | Kevin Berve | Assistant Property Master |
| Sound | Sean Landeros | Sound Recordist |
| Sound | Robert Rodriguez | Sound Effects Editor |
| Production | Luz María Rojas | Co-Producer |
| Sound | Matthew C. Beville | Foley Editor |
| Sound | Robert Rodriguez | Sound Re-Recording Mixer |
| Sound | William Jacobs | Sound Designer |
| Sound | James J. Mase | Boom Operator |
| Art | Caylah Eddleblute | Property Master |
| Art | Kara Sutherlin | Standby Painter |
| Art | Alberto Villaseñor | Construction Coordinator |
| Sound | Ed Novick | Production Sound Mixer |
| Editing | Val Kuklowsky | Dialogue Editor |
| Art | King Orba | Set Dresser |
| Crew | Troy Robinson | Stunt Coordinator |
| Camera | Robert Rodriguez | Director of Photography |
| Crew | Jeff 'JJ' Dashnaw | Stunt Coordinator |
