 | Brie Larson als Jeannette Walls |
 | Woody Harrelson als Rex Walls |
 | Naomi Watts als Rose Mary Walls |
 | Max Greenfield als David |
 | Sarah Snook als Lori Walls |
 | Ella Anderson als Jeannette Walls (Age 10) |
 | Sadie Sink als Lori Walls (Age 12) |
 | Robin Bartlett als Erma Walls |
 | Chandler Head als Jeannette Walls (Age 5 and 6) |
 | Iain Armitage als Brian Walls (Age 5) |
 | Brigette Lundy-Paine als Maureen Walls |
 | Josh Caras als Brian Walls |
 | Olivia Kate Rice als Lori Walls (Age 7) |
| Charlie Stowell als Young Brian Walls |
| Charlie Guyon als Baby Maureen Walls |
| Noemie Guyon als Baby Maureen Walls |
| Eden Grace Redfield als Maureen Walls (Age 3 ) |
 | Shree Crooks als Maureen Walls (Age 7) |
 | Dominic Bogart als Robbie |
 | Joe Pingue als Stanley |
 | Charlie Shotwell als Brian Walls (Age 7) |
 | Alanna Bale als Student |
 | Andrew Shaver als Dr. Taylor |
| Nathaly Thibault als Business Woman |
 | Kyra Harper als Miss Bivens |
 | Hamza Haq als Intern |
 | Kenny Wong als Restaurant Manager |
 | Chris Gillett als Mr. Thompson |
 | Darrin Baker als Pool Manager |
 | Tyrone Benskin als Ronnie |
 | Sabrina Campilii als Steph |
 | Philippe Hartmann als NYC Deli Patron |
 | Samantha Hodhod als Assistant |
 | Tessa Mossey als Tiffany |
 | Sarah Camacho als Student |
 | Brenda Kamino als Mrs. Lehocky |
 | Vlasta Vrana als Mr. Lehocky |
| Sandra Flores als Miss Kelly |
| Destin Daniel Cretton | Director |
| Erik Feig | Producer |
| Gil Netter | Producer |
| Andrew Lanham | Writer |
| Destin Daniel Cretton | Writer |
| Mike Drake | Executive Producer |
| Tami Goldman | Co-Producer |
| Joel P. West | Music |
| Nat Sanders | Editor |
| Ronna Kress | Casting |
| Sharon Seymour | Production Design |
| Nicolas Lepage | Supervising Art Director |
| Charlotte Rouleau | Art Direction |
| Joy Cretton | Costume Design |
| Mirren Gordon-Crozier | Costume Design |
| Annick Chartier | Makeup Department Head |
| Michelle Côté | Hair Department Head |
| Michelle Côté | Hair Designer |
| Melissa Fafard | Makeup Artist |
| Hélène Ross | Production Manager |
| Renato De Cotiis | Second Assistant Director |
| Richard L. Fox | First Assistant Director |
| Brent Lambert | Set Designer |
| Jose Holder | Storyboard Designer |
| Claude La Haye | Sound Mixer |
| Francis Péloquin | Boom Operator |
| Branden Spencer | Supervising Sound Editor |
| Rob Young | Sound Recordist |
| Louis Craig | Special Effects Supervisor |
| Ray McIntyre Jr. | Visual Effects Supervisor |
| David McKeown | Stunt Coordinator |
| Jeannette Walls | Book |
| Marie-Josée Beaudet | Makeup Artist |
| Jason Nardella | Set Dresser |
| Kim Beaudoin | Assistant Location Manager |
| Eliott Davis | Assistant Location Manager |
| Christian Diaz de Bedoya | Location Manager |
| Pierre Olivier Chénard | Transportation Coordinator |
| David Dufresne | Driver |
| Michaela Annette | First Assistant Accountant |
| D.J. Shea | Compositor |
| G. Allen Stewart | Compositor |
| Patrick Trahan | Digital Compositor |
| Blane Granstaff | Compositor |
| Dan Goyens | Lighting Technician |
| Chelsea Ellis Bloch | Casting Associate |
| Manon Thomas | Decorator |
| Sébastien Thivierge | Decorator |
| Brett Voss | Foley Mixer |
| Dylan Tuomy-Wilhoit | Foley Artist |
| Dave Wilson | ADR Mixer |
| Kenneth MacKenzie | Key Grip |
| Catherine Gélinas | Key Costumer |
| Lena McIntyre | Key Costumer |
| Myriam Saint-Louis | Costumer |
| James Sanchez | Driver |
| Jeffrey Gladu | Payroll Accountant |
| Jean-Philippe Gilbert | Transportation Captain |
| Lilly Reid | Music Coordinator |
| Del Spiva | Music Editor |
| Patrice Martineau | Driver |
| Brett Pawlak | Director of Photography |
| Ghislaine Sant | Hairstylist |
| Jean Scarabin | Hairstylist |
| Sabrina Trudel | Assistant Makeup Artist |
| Stéphane Byl | Third Assistant Director |
| Richard Daoust | Carpenter |
| Lucie Fournier | Sculptor |
| François Gagnon | Construction Coordinator |
| Annie Lamarre | Art Department Coordinator |
| Annie Régol | Property Master |
| Mathieu Verreault | Graphic Designer |
| Hector C. Gika | Sound Effects Editor |
| Chris Navarro | ADR Mixer |
| Renée Tondelli | ADR Editor |
| Mathew Waters | Sound Re-Recording Mixer |
| Marie France Denoncourt | Stunt Double |
| Mathilde Gingras | Stunt Double |
| Hunter Belle Hall | Stunt Double |
| Tyler Hall | Stunt Driver |
| Josh Kemble | Stunt Double |
| Robyn McNicoll | Stunt Double |
| Trina Siopy | Stunt Double |
| Mitch Spour | Stunt Driver |
| Francois Archambault | Steadicam Operator |
| Diego Arroyo | Best Boy Electric |
| Eric Aubin | Second Assistant "B" Camera |
| Steve Banister | First Assistant "B" Camera |
| Roch Boucher | Second Assistant "A" Camera |
| Gregory Byrd | Second Assistant "B" Camera |
| Emmanuel Béhier Migeon | Underwater Camera |
| Sylvaine Dufaux | Camera Operator |
| Eames Gagnon | Gaffer |
| Dan Godar | Aerial Camera |
| Lane Luper | Second Assistant "A" Camera |
| Brad MacLean | Dolly Grip |
| Nicolas Marion | First Assistant "B" Camera |
| Jake Giles Netter | Still Photographer |
| Gary Pachany | First Assistant "A" Camera |
| Mark S. Pearce | Dolly Grip |
| Réal Saulnier | Generator Operator |
| Nito Serna | First Assistant "A" Camera |
| Paul Viau | Rigging Gaffer |
| Henri Aubertin | Costume Supervisor |
| Viriya Say | Seamstress |
| Daniel Morfesis | First Assistant Editor |
| Kimi Rosenthal | Post Production Coordinator |
| Christine Lalande | Script Supervisor |
| Shane Tanny | Script Coordinator |
| Jerome Butler | Dialect Coach |
| Kathy Ann Thomas | Production Coordinator |
| Michael Hertlein | Dialogue Editor |
| Suzanne Cloutier | Set Decoration |
| Emily Cheung | Producer's Assistant |
