Een vreemd ongeluk brengt een ernstig zieke wiskundige, een rouwende moeder en een herboren ex-gevangene samen in een verhaal dat hun emotioneel en fysiek beladen levens toont. Hoewel ze elkaar niet kennen, wordt het trio onherroepelijk verstrengeld in een mix van liefde, verlossing en obsessie.
Nee, helaas is 21 Grams nog niet beschikbaar op Netflix in Nederland.
| Directing | Alejandro González Iñárritu | Director |
| Production | Alejandro González Iñárritu | Producer |
| Production | Robert Salerno | Producer |
| Sound | Gustavo Santaolalla | Original Music Composer |
| Production | Ted Hope | Executive Producer |
| Camera | Rodrigo Prieto | Director of Photography |
| Editing | Stephen Mirrione | Editor |
| Production | Francine Maisler | Casting |
| Art | Brigitte Broch | Production Design |
| Art | Deborah Riley | Art Direction |
| Art | Meg Everist | Set Decoration |
| Costume & Make-Up | Marlene Stewart | Costume Design |
| Writing | Guillermo Arriaga | Writer |
| Production | Guillermo Arriaga | Associate Producer |
| Costume & Make-Up | Luisa Abel | Makeup Department Head |
| Costume & Make-Up | Vivian Baker | Prosthetic Makeup Artist |
| Costume & Make-Up | Vivian Baker | Key Makeup Artist |
| Costume & Make-Up | Jolynn Nieto | Hairstylist |
| Costume & Make-Up | Gail Rowell-Ryan | Hair Department Head |
| Costume & Make-Up | Laurel Van Dyke | Hairstylist |
| Costume & Make-Up | Gloria Belz | Makeup Artist |
| Production | Robert Salerno | Unit Production Manager |
| Production | Diane L. Sabatini | Production Supervisor |
| Crew | Tim Pedegana | Post Production Supervisor |
| Production | Amy Kaufman | Executive In Charge Of Production |
| Directing | James Alan Hensz | First Assistant Director |
| Directing | Michael E. Steele | First Assistant Director |
| Directing | Kenneth Roth | Second Assistant Director |
| Directing | Kiersten Pilar Miller | Second Assistant Director |
| Crew | Spiro Razatos | Stunt Coordinator |
| Crew | Peewee Piemonte | Stunts |
| Crew | Chris Durand | Stunts |
| Crew | Chandra De Alessandro | Stunts |
| Crew | David M. Graves | Stunts |
| Crew | Andy Gill | Stunts |
| Crew | Gilbert B. Combs | Stunts |
| Sound | Martín Hernández | Supervising Sound Editor |
| Art | Thomas Betts | Set Designer |
| Directing | Eva Z. Cabrera | Script Supervisor |
| Camera | Diego Quemada-Díez | Camera Operator |
| Camera | Xavier Grobet | Camera Operator |
| Camera | Xavier Grobet | Second Unit Director of Photography |
| Camera | Jay Levy | First Assistant "A" Camera |
| Camera | Glenn Kaplan | First Assistant "B" Camera |
| Camera | Lisa Guerriero | Second Assistant Camera |
| Camera | Michael Cruickshank | Camera Loader |
| Camera | Mark Karavite | Steadicam Operator |
| Camera | David J. Thompson | Steadicam Operator |
| Crew | Paul Murphey | Video Assist Operator |
| Sound | José Antonio García | Sound Mixer |
| Sound | Jonathan Fuh | Boom Operator |
| Crew | Andy Brokmeyer | Cableman |
| Lighting | Robby Baumgartner | Gaffer |
| Lighting | Peter Walts | Best Boy Electric |
| Lighting | Anthony 'Spike' Simms | Rigging Gaffer |
| Camera | Joseph Dianda | Key Grip |
| Lighting | Lee McLemore | Rigging Grip |
| Costume & Make-Up | Riki Lin Sabusawa | Costume Supervisor |
| Costume & Make-Up | Mark Peterson | Costume Supervisor |
| Costume & Make-Up | Holly Davis | Key Costumer |
| Costume & Make-Up | Ira M. Hammons-Glass | Costumer |
| Costume & Make-Up | Nancy Collini | Set Costumer |
| Costume & Make-Up | Phillip Howard | Set Costumer |
| Editing | Douglas Crise | Assistant Editor |
| Editing | Keith H. Sauter | Assistant Editor |
| Editing | Brian Ufberg | Assistant Editor |
| Sound | Anibal Kerpel | Music Editor |
| Sound | Lynn Fainchtein | Music Supervisor |
| Art | Cynthia Nibler | Property Master |
| Art | Allison Gross | Assistant Property Master |
| Crew | Thomas Kittle | Special Effects Technician |
| Crew | Gary Pilkinton | Special Effects Technician |
| Production | Steve Cainas | Production Coordinator |
| Production | Day Permuy | Assistant Production Coordinator |
| Production | J. Elizabeth Ingram | Production Secretary |
| Production | Robyn Adams | Production Secretary |
| Production | Sarah Tackett | Location Casting |
| Production | Len Murach | Location Manager |
| Production | Damon Michael Gordon | Assistant Location Manager |
| Production | Tony Hernandez | Location Assistant |
| Production | Melinka Thompson-Godoy | Location Coordinator |
| Art | Alex Blagg | Location Scout |
| Crew | Sato Masuzawa | Actor's Assistant |
| Crew | Tyrel Ventura | Actor's Assistant |
| Crew | Annaliese Levy | Actor's Assistant |
| Crew | Janey Bergam | Actor's Assistant |
| Crew | Jeanette Agaronoff | Actor's Assistant |
| Art | Troy Borisy | Leadman |
| Sound | Martín Hernández | Sound Designer |
| Sound | Roland N. Thai | Sound Designer |
| Sound | Sergio Díaz | Sound Editor |
| Sound | Michael Hertlein | Sound Editor |
| Sound | Michael Mullane | Sound Editor |
| Sound | Robert Getty | Sound Editor |
| Sound | Christopher Sidor | Sound Recordist |
| Sound | Nerses Gezalyan | Foley Mixer |
| Sound | Jeffrey Wilhoit | Foley Artist |
| Sound | James Moriana | Foley Artist |
| Sound | Ron Bedrosian | ADR Mixer |
| Sound | Julio Carmona | ADR Recordist |
| Production | Barbara Harris | ADR Voice Casting |
| Sound | Jon Taylor | Sound Re-Recording Mixer |
| Sound | Brad Sherman | Sound Re-Recording Mixer |
| Art | Jeffrey Schlatter | Construction Coordinator |
| Art | Thomas Michael Ryan | Construction Foreman |
| Production | Mary Sunshine | Production Accountant |
| Production | Jill Rosenblatt | First Assistant Accountant |
| Production | Jennifer Hunt Pedevilla | Payroll Accountant |
| Camera | Jim Sheldon | Still Photographer |
| Camera | Merrick Morton | Still Photographer |
| Crew | Lucas Moore | Studio Teacher |
| Crew | Jerry Jackson | Transportation Coordinator |
| Crew | Tom Moore | Transportation Captain |
| Editing | Paul Tanzillo Jr. | Negative Cutter |
| Editing | Steve Bowen | Colorist |
| Editing | Hilda Saffari | Digital Intermediate Producer |
| Sound | Trevor Ward | Dolby Consultant |
| Crew | Jack Gill | Stunts |
