Diary of a Wimpy Kid (2021) — Cast
Cast
| Gracen Newton | Manny |
| Julian Zane | Voices |
| Jessica Mikayla Adams | Braces |
| ViviAnn Yee | Voices |
| Mizinga Mwinga | Wizard |
| Gig Morton | Random Skinhead |
| Tessa Espinola | "Curly" Steffans |
| Jordyn Curet | Voices |
| Jason Grant Smith | Voices |
| Iara Nemirovsky | Voices |
| Cyrus Arnold | Fat Teen |
| Gracyn Shinyei | Ponytail |
| Jen Cain | Voices |
| John Omohundro | Fat Teen |
| Chris Diamantopoulos | Frank |
| Jaime Maclean | Holly Golightly |
| Ava Mae Leslie | Voices |
| Christian Convery | Fregley |
| Billy Lopez | Underwood |
| Lossen Chambers | Teacher |
| Hunter Dillon | Rodrick Heffley |
| Andre Robinson | Voices |
| Caleb Jeon | Voices |
| Zeno Robinson | Baseball |
| Ethan William Childress | Rowley |
| Johnny Gidcomb | Voices |
| Tristan Allerick Chen | Voices |
| Braxton Baker | Mullet |
| Donny Lucas | Humphreys |
| Erica Cerra | Rodrick Heffley |
| Áine Sunderland | Blonde |
| Matt Nolan | Voices |
| Yuvraj Kalsi | Davies |
| Brenda Crichlow | Fregley |
| Carter Sand | Voices |
| Lily Rose Silver | Voices |
| Brooke D. Singleton | Voices |
| Benjamin Valic | Voices |
| Brady Noon | Greg |
| Robert Moloney | Joshie |
| Susan Leslie | Voices |
| Veda Maharaj | Chirag |
Crew
| John Paesano | Original Music Composer |
| Michael Huang | Sound Re-Recording Mixer |
| Kenneth L. Johnson | Sound Re-Recording Mixer |
| Rick Mischel | Executive Producer |
| Trent Noble | Animation Supervisor |
| Jeff Kinney | Character Designer |
| Sean Evans | Sound Designer |
| Jeff Kinney | Producer |
| Jeff Kinney | Book |
| Jeff Kinney | Screenplay |
| Swinton O. Scott III | Director |
| Micah Dahlberg | Casting |
| Sylvain Blais | Editor |