| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alfredo Díaz | Crew | Sound | Sound Effects Editor |
 Alison Reid | Crew | Crew | Stunts |
Allan Fung | Crew | Sound | Supervising Sound Editor |
 Anastasia Masaro | Crew | Art | Production Design |
Antonio Riestra | Crew | Camera | Director of Photography |
Gabriel Gutiérrez | Crew | Sound | Sound Designer |
 Guillermo del Toro | Crew | Production | Executive Producer |
 J. Miles Dale | Crew | Production | Producer |
 Javier Aller | Crew | Production | Production Assistant |
 Luis Sequeira | Crew | Costume & Make-Up | Costume Design |
Marc Orts | Crew | Sound | Sound Re-Recording Mixer |
Michele Conroy | Crew | Editing | Editor |
Patricia Cuccia | Crew | Art | Set Decoration |
Robin D. Cook | Crew | Production | Casting |
Suzanne Aplin | Crew | Costume & Make-Up | Costume Supervisor |
 Bárbara Muschietti | Crew | Writing | Screenplay, Producer, Story |
Dana Howes | Crew | Crew | Transportation Coordinator |
 Fernando Velázquez | Crew | Sound | Original Music Composer |
Elis Y. Lam | Crew | Art | Art Direction |
 Andy Muschietti | Crew | Writing | Screenplay, Director, Story |
Jeffrey Cassidy | Crew | Crew | Video Assist Operator |
Doug Reid | Crew | Lighting | Best Boy Electric |
Andrij Molodecky | Crew | Art | Set Dresser |
John 'Butch' Rose | Crew | Art | Set Dresser |
Greg Chapman | Crew | Sound | Sound Re-Recording Mixer |
Kari Measham | Crew | Art | Set Decoration Buyer |
 Neil Cross | Crew | Writing | Screenplay |
 Christopher Marren | Cast | Actor | Cop |
 Daniel Kash | Cast | Actor | Dr. Dreyfuss |
 David Fox | Cast | Actor | Burnsie |
 Dominic Cuzzocrea | Cast | Actor | Ron |
 Jane Moffat | Cast | Actress | Jean Podolski / Mama (Voice) |
 Julia Chantrey | Cast | Actress | Nina |
 Matthew Edison | Cast | Actor | Young Cop |
 Nikolaj Coster-Waldau | Cast | Actor | Lucas Desange |
 Ray Kahnert | Cast | Actor | Judge |
 Jessica Chastain | Cast | Actress | Annabel |
 Javier Botet | Cast | Actor | Mama (body) |
 Megan Charpentier | Cast | Actress | Victoria Desange |
 Melina Matthews | Cast | Actress | Mama (voice) |
 Isabelle Nélisse | Cast | Actress | Lilly Desange |
 Morgan McGarry | Cast | Actress | Young Victoria |
 Diane Gordon | Cast | Actress | Louise |
| Person | Type | Job | Role(s) |
