 | Grace Kaufman als Lennie |
 | Jacques Colimon als Joe Fontaine |
 | Cherry Jones als Fiona |
 | Jason Segel als Big |
 | Pico Alexander als Toby Shaw |
 | Ji-young Yoo als Sarah |
 | Havana Rose Liu als Bailey |
 | Julia Schlaepfer als Rachel Brazile |
 | Tyler Lofton als Marcus |
 | Sol Landerman als Mr. James |
 | Augie Isaac als Luke Jacobus |
 | Destiny Ekwueme als Preppy Student (uncredited) |
| Rae Robison als Maria (uncredited) |
| Lukas Stoiber als Skateboard Student (uncredited) |
| Madisyn Wood als Young Lennie (uncredited) |
| Josephine Decker | Director |
| Margaret French-Isaac | Producer |
| Denise Di Novi | Producer |
| Jandy Nelson | Screenplay |
| Josephine Decker | Producer |
| Allison Rose Carter | Producer |
| Joshua Bachove | Executive Producer |
| Jandy Nelson | Executive Producer |
| Ava Berkofsky | Director of Photography |
| Laura Zempel | Editor |
| Grace Yun | Production Design |
| Cat Navarro | Art Direction |
| Alex Brandenburg | Set Decoration |
| Christopher Peterson | Costume Design |
| Josie Rodriguez | Makeup Department Head |
| Jandy Nelson | Novel |
| Natalia Poltoratzky | Set Decoration Buyer |
| Jaime Sainz Cuevas | Sound Designer |
| Marlene Zermeño | Sound Effects Editor |
| David Lebensfeld | Visual Effects Supervisor |
| Grant Miller | Visual Effects Supervisor |
| Valerie Emmi | Set Costumer |
| Nancy Jarzynko | Costume Supervisor |
| Caroline Shaw | Original Music Composer |
| Joe Nankin | Associate Producer |
| Sabrina Parra | Associate Producer |
| Timothy Eulich | Stunt Coordinator |
| Martin Scorsese | Thanks |
