The year is 1988. Abby and Gretchen have been best friends since fourth grade. After an evening of skinny-dipping goes disastrously wrong, Gretchen begins to act…different, which leads Abby to suspect her best friend may be possessed by a demon. With help from some unlikely allies, Abby embarks on a quest to save Gretchen. But is their friendship powerful enough to beat the devil?
Unfortunately the movie My Best Friend's Exorcism is not yet available on HBO Max.
| Production | Christopher Landon | Producer |
| Writing | Grady Hendrix | Novel |
| Directing | Damon Thomas | Director |
| Production | Ellen Goldsmith-Vein | Producer |
| Costume & Make-Up | Ariyela Wald-Cohain | Costume Design |
| Editing | Brad Turner | Editor |
| Art | Julian Scalia | Art Direction |
| Art | Bruce Curtis | Production Design |
| Crew | William Scharpf | Stunt Coordinator |
| Directing | John Bonaccorse | Second Unit Director |
| Crew | Brooklyn Proctor | Stunt Double |
| Directing | Christopher M. Searcey | Script Supervisor |
| Visual Effects | David Fletcher | Special Effects Supervisor |
| Art | Shawn Upthegrove | Leadman |
| Costume & Make-Up | Lydia Graboski-Bauer | Costume Supervisor |
| Art | Jon Sandmaier | Set Designer |
| Costume & Make-Up | Ginger Knussmann | Key Costumer |
| Costume & Make-Up | Katie Ballard | Hair Department Head |
| Directing | Stephen W. Moore | First Assistant Director |
| Production | Michael Flynn | Unit Production Manager |
| Camera | Rob Givens | Director of Photography |
| Art | Laura Wallgren | Set Decoration |
| Crew | Terry Collis | Transportation Coordinator |
| Production | Jason Underwood | Location Manager |
| Costume & Make-Up | Tess Laeh | Key Makeup Artist |
| Costume & Make-Up | Micah Laine | Makeup Department Head |
| Crew | Isabel Henderson | Post Production Supervisor |
| Art | David H. Nash | Construction Coordinator |
| Editing | Peter Gvozdas | Additional Editor |
| Visual Effects | Philippe Massonnat | Visual Effects Producer |
| Production | Tiffany D. Moore | Production Coordinator |
| Sound | Ryland Blackinton | Original Music Composer |
| Production | Joesph Gagliardi | Assistant Location Manager |
| Editing | Gareth Spensley | Colorist |
| Visual Effects | Philippe Thibault | VFX Supervisor |
| Art | Aaron Becker | Title Designer |
| Production | Mary Vernieu | Casting |
| Costume & Make-Up | Sonya Riviere | Key Hair Stylist |
| Production | Lindsay Williams | Executive Producer |
| Writing | Jenna Lamia | Teleplay |
| Production | Grady Hendrix | Executive Producer |
| Production | David Borgenicht | Producer |
| Production | Katherine McGuire | Executive Producer |
| Production | Jenna Lamia | Associate Producer |
| Sound | Rob Lowry | Music Supervisor |
| Art | Hsien Lun Su | Title Designer |
| Production | Michael Flynn | Executive Producer |
| Production | Stephen W. Moore | Co-Producer |
| Production | Jennifer Semler | Producer |
| Production | Lindsay Graham Ahanonu | Casting |
| Art | Lauren Mosley | Set Dresser |
| Lighting | Ryan Perdew | Gaffer |
| Sound | Emily Bender | Music Coordinator |
| Art | Alexander K. Riba | Set Dresser |
| Camera | Mark Gilmer | Digital Imaging Technician |
| Sound | Jeffrey Roy | ADR Mixer |
| Sound | Greg Crawford | ADR Mixer |
| Sound | Mia Riggins | Music Coordinator |
| Sound | Brett Murray | Sound Mixer |
| Sound | Dean St. John | ADR Mixer |
| Sound | Ric Schnupp | Supervising Sound Editor |
| Sound | Rich Macar | ADR Recordist |
| Sound | Chris Foster | Supervising Sound Editor |
| Camera | Tyler Bastianson | Second Assistant Camera |
| Camera | Keith Cutler | Key Grip |
| Camera | Eliza Morse | Still Photographer |
| Editing | Serena Forghieri | First Assistant Editor |
| Camera | Trevor Rios | First Assistant "A" Camera |
| Editing | Chase Commins | Dailies Operator |
| Camera | Sterling Wiggins | First Assistant "B" Camera |
| Sound | Colin Alexander | Dialogue Editor |
| Sound | Bill Orrico | Dialogue Editor |
| Production | Rose Locke | Extras Casting |
| Sound | Rene Coronado | ADR Engineer |
| Sound | Robert Cotnoir | Music Editor |
| Lighting | Kyle Z. Anderson | Lighting Technician |
| Editing | Theresa Crooks | Color Assistant |
