21 Grams
- Annu: 2003
- Paese: United States of America
- Genre: Drama, Crime, Thriller
- Studio: This is that, Y Productions, Mediana Productions Filmgesellschaft, Focus Features
- Parolla chjave: life and death, rage and hate, transplantation, faith, suicide attempt, loss of loved one, widow, ex-detainee, new mexico, sadness, car crash, multiple storylines
- Direttore: Alejandro González Iñárritu
- Cast: Sean Penn, Naomi Watts, Danny Huston, Carly Nahon, Claire Pakis, Benicio del Toro