 | Toni Collette als Annie Graham |
 | Gabriel Byrne als Steve Graham |
 | Alex Wolff als Peter Graham |
 | Milly Shapiro als Charlie Graham |
 | Ann Dowd als Joan (Joanie) |
 | Mallory Bechtel als Bridget |
 | Brock McKinney als Aaron |
 | Jake Brown als Brendan |
 | Morgan Lund als Mr. Davis |
 | Christy Summerhays als Charlie's Teacher |
 | Bus Riley als History Teacher |
 | Jarrod Phillips als Group Leader |
 | Heidi Mendez als Spanish Speaking Woman |
 | Zachary Arthur als Boy in Room |
 | David Stanley als Man at Wake |
| Moises L. Tovar als Translator |
 | Austin R. Grant als Stoner #1 |
 | Gabriel Monroe Eckert als Stoner #2 |
| Harrison Nell als Student #1 |
| BriAnn Rachele als Student #2 |
 | Ari Aster als Asher Gallery Representative (voice) (uncredited) |
 | Marilyn Miller als Woman in the Tree (uncredited) |
| Mark Blockovich als Support Group Member (uncredited) |
| Rachelle Hardy als Cult Member (uncredited) |
| Jason Miyagi als High School Partier (uncredited) |
| Lorenzo Silva als Skater Boy (uncredited) |
| Alexis Long als Cake Girl (uncredited) |
| Toni Collette | Executive Producer |
| Gabriel Byrne | Executive Producer |
| Lewis Goldstein | Supervising Sound Editor |
| Lewis Goldstein | Sound Re-Recording Mixer |
| Kevin Scott Frakes | Producer |
| Lars Knudsen | Producer |
| Peter Epstein | Stunts |
| Brian Sullivan | Camera Operator |
| Andrew K. Hodge | Location Manager |
| Matthew Bellows | Stunts |
| Shaun Brennan | Foley Artist |
| Jessica Kelly | Casting |
| Buddy Patrick | Producer |
| Angella Joy | Stunts |
| Jennifer Lame | Editor |
| Ari Aster | Director |
| Ari Aster | Writer |
| Wray Featherstone | Property Master |
| Natalie Pascual | Costumer |
| Colin Stetson | Original Music Composer |
| Samantha Cook | Assistant Production Coordinator |
| Brian Lives | Set Decoration |
| Scott Arneman | Property Master |
| Britani Alexander | Transportation Coordinator |
| Glenn Allen | Visual Effects Producer |
| Erin Naifeh | First Assistant "B" Camera |
| Jason Haase | Leadman |
| Abigail Steele | Key Makeup Artist |
| Tom Ryan | Sound Re-Recording Mixer |
| Tom Ryan | ADR Editor |
| Patrick Christensen | ADR Mixer |
| Eran Dinur | Visual Effects Supervisor |
| Dann Fink | ADR Voice Casting |
| Richard T. Olson | Art Direction |
| Scott E. Chester | Line Producer |
| Whitney Coleman | Stunts |
| Whitney Coleman | Stunt Double |
| Rockey Dickey Jr. | Stunts |
| Eliza Coleman | Stunt Coordinator |
| Grace Yun | Production Design |
| Jonathan Gardner | Executive Producer |
| Lex Hogan | Script Supervisor |
| Lora Laing | Hair Department Head |
| Dave Levine | Visual Effects |
| Jennifer Lamb | Stunts |
| John Malmborg | Construction Coordinator |
| Rebecca Dealy | Casting Associate |
| Greg T. Moon | Makeup Department Head |
| Lucien Harriot | Visual Effects Supervisor |
| Joe Rudge | Music Supervisor |
| Pawel Pogorzelski | Director of Photography |
| Timothy Reynolds | Best Boy Electric |
| Lisa Konecny | Digital Imaging Technician |
| Olga Mill | Costume Design |
| Jed Seus | Steadicam Operator |
| J. Owen Rogers | Gaffer |
| Steve Newburn | Makeup Effects Designer |
| Joseph L. Garrard | Boom Operator |
| Ryan Pedersen | Boom Operator |
| Lucian Johnston | Editor |
| Tina Fabulic | Hairdresser |
| Alfred DeGrand | Dialogue Editor |
| Alfred DeGrand | Assistant Sound Editor |
| Jeffrey Penman | Post Production Supervisor |
| Jeffrey Penman | Associate Producer |
| Wen Hsuan Tseng | Foley Editor |
| Mark Chadwick | Stunts |
| Fangge Chen | Visual Effects Designer |
| Beau Ferris | Associate Producer |
| Alex Soto | Sound Effects Editor |
| Steven C. Laneri | Production Sound Mixer |
| Landon Hill | Lighting Technician |
| Richard Maxey | Dolly Grip |
| Craig Sullivan | Key Grip |
| Heather Gaither | Assistant Costume Designer |
| Reid Chavis | Still Photographer |
| Ashley Cook | Art Department Coordinator |
| Deborah Wheatley | Assistant Art Director |
| Erik Christian Hansen | Lighting Technician |
| Briana Wall | Script Supervisor |
| Covey Quist | Set Costumer |
| Aaron Swenson | Wardrobe Supervisor |
| Linzy Elliot | Sound Effects Editor |
| Stephanie McGann | Visual Effects Coordinator |
| Caleb Rasak | Electrician |
| Sam Levy | Assistant Editor |
| Corbett McAllister | Stunts |
| Andy Baker | First Assistant "A" Camera |
| Crystal Puckett | Costumer |
| Jack Sobo | Production Sound Mixer |
| Brett Smrz | Stunts |
| Viktor Weiszhaupt | Production Sound Mixer |
| Loren Kane | Graphic Designer |
| Rachel Schneider | Post Production Accountant |
| William Kay | Executive Producer |
| Tyler Campellone | Associate Producer |
| Ryan Kreston | Executive Producer |
| Brandon Tamburri | Executive Producer |
| Brandon Tamburri | Associate Producer |
| Bobbi Murphy | Key Hair Stylist |
| Chris Hansen | Prosthetic Makeup Artist |
| Elizabeth Mbousia | Makeup Artist |
| Jennifer Ricci | Production Accountant |
| Gabriel Jessop | Greensman |
| Glade Quinn | Dolly Grip |
| Jason Walser | Grip |
| Gayle Minkevitch-Jensen | Extras Casting |
| MarSchelle Walker | Second Second Assistant Director |
| Alex Stein | Grip |
| Kathleen Dombo | Payroll Accountant |
| Scott b Schmidt | Assistant Property Master |
| Jonathan Hallett | Storyboard Artist |
| Jason Painter | First Assistant "B" Camera |
| K.C. Olsen | Best Boy Grip |
| Jeff Rosenblatt | Grip |
| Michael McGuire | Stunts |
| Nicholes Antonio | Stunts |
| Davy Leeman | First Assistant Director |
| Matt Punosevic | Second Assistant Director |
| Matthew Leslie | Second Assistant "A" Camera |
| Kody Riekena | Second Assistant "B" Camera |
| Austin Green | Second Assistant "B" Camera |
| Tyler Turner | Dolly Grip |
| Craig Katayama | Grip |
| Shane Etsitty | Set Dresser |
| Eric Billy | Set Dresser |
| Chase Coleman | Assistant Property Master |
| Paul Lowell | Transportation Captain |
| Joe Day | Assistant Location Manager |
| Natania Garrett | Production Coordinator |
| Ethan Paur | Production Secretary |
| Matt Serna | Craft Service |
| Jeff Midgley | Set Medic |
| J. Scott Rakozy | ADR Mixer |
