To put their demons to rest once and for all, Josh Lambert and a college-aged Dalton Lambert must go deeper into The Further than ever before, facing their family's dark past and a host of new and more horrifying terrors that lurk behind the red door.
Unfortunately the movie Insidious: The Red Door is not yet available on HBO Max.
| Directing | Patrick Wilson | Director |
| Production | Jason Blum | Producer |
| Production | Oren Peli | Producer |
| Production | James Wan | Producer |
| Production | Leigh Whannell | Producer |
| Production | Brian Kavanaugh-Jones | Executive Producer |
| Production | Steven Schneider | Executive Producer |
| Writing | Scott Teems | Screenplay |
| Writing | Leigh Whannell | Characters |
| Writing | Leigh Whannell | Story |
| Costume & Make-Up | Ashley Levy | Makeup Department Head |
| Costume & Make-Up | Carmilla Cunny | Makeup Artist |
| Costume & Make-Up | Mary Chipman | Makeup Artist |
| Costume & Make-Up | Dajia Milan | Costume Design |
| Costume & Make-Up | Alexyz Danine Kemp | Costume Supervisor |
| Visual Effects | Caleb Knueven | Visual Effects Supervisor |
| Visual Effects | Tina Sonderup Dearlove | Visual Effects Producer |
| Art | Zebah Pinkham | Supervising Art Director |
| Art | Adam Reamer | Production Design |
| Art | Abraham Chan | Art Direction |
| Production | Ryan Turek | Executive Producer |
| Production | Charles Layton | Executive Producer |
| Production | Susanne Scheel | Casting |
| Production | Howard Young | Co-Producer |
| Costume & Make-Up | Jason Baker | Special Effects Makeup Artist |
| Costume & Make-Up | Heather Benson | Special Effects Makeup Artist |
| Costume & Make-Up | Christen Edwards | Key Hair Stylist |
| Costume & Make-Up | Sarah Francavilla | Makeup Artist |
| Costume & Make-Up | Robin Fuqua | Special Effects Makeup Artist |
| Costume & Make-Up | Nicki Harris | Contact Lens Technician |
| Costume & Make-Up | Suzy Mazzarese-Allison | Hair Department Head |
| Costume & Make-Up | Mandy Mossman | Makeup Artist |
| Costume & Make-Up | Michelle Nyree | Hair Setup |
| Costume & Make-Up | Shannon Rae Mulligan | Key Makeup Artist |
| Costume & Make-Up | Lia Parks | Makeup Artist |
| Costume & Make-Up | Justin Raleigh | Special Effects Makeup Artist |
| Costume & Make-Up | Bri Trischitta | Makeup Artist |
| Costume & Make-Up | Brian Wade | Special Effects Makeup Artist |
| Directing | Theron Alford | Second Assistant Director |
| Directing | Lauren K. McGarry | Second Assistant Director |
| Art | Michael Aitken | Property Master |
| Art | Patrick Campbell | Storyboard Artist |
| Art | Mark M. Chang | Graphic Designer |
| Art | Laura Coash | Art Department Assistant |
| Art | Harrison Gambelli | Set Dresser |
| Crew | Courtlan Green | Scenic Artist |
| Art | Josh Clark | Leadman |
| Art | Monk Hooper | Other |
| Art | Alex Innocenti | Concept Artist |
| Crew | Adam Jones | Scenic Artist |
| Art | Jeannette Kim | Assistant Art Director |
| Art | Stephanie Little | Graphic Designer |
| Art | Matthew Kozak | Art Department Assistant |
| Art | Deeksha Marla | Art Department Assistant |
| Art | Steph McNally | Assistant Set Decoration |
| Crew | Jason Thomas Palmer | Scenic Artist |
| Crew | Vinny Perrella | Scenic Artist |
| Production | Adam Reamer | Production Designer |
| Art | Ainsley Roh | Art Department Coordinator |
| Art | Alisha Schuett | Props |
| Art | Wes Simpkins | Storyboard Artist |
| Art | Richard A. Sirico | Construction Coordinator |
| Art | Diane Soffian | Set Dresser |
| Art | Johanna Waldron | Assistant Property Master |
| Sound | John Bradley | Utility Sound |
| Sound | Michael Infante | Sound Mixer |
| Sound | Kurdice Neal | Utility Sound |
| Crew | Thomas DeLuca | Special Effects Technician |
| Crew | Nicole Dillard | Special Effects Technician |
| Visual Effects | Eugene Hitt | Special Effects Supervisor |
| Visual Effects | Bryan Binder | Visual Effects Producer |
| Visual Effects | Mary Manchin | Visual Effects Coordinator |
| Crew | Matt Allmen | Stunts |
| Crew | Federico Berte | Stunt Double |
| Crew | Nico Coucke | Stunt Double |
| Crew | Shane Geraghty | Stunts |
| Crew | Luke Lesko | Stunt Double |
| Crew | Mark Pettograsso | Utility Stunts |
| Crew | Tracey Ruggiero | Stunt Coordinator |
| Crew | Michael Viola | Stunts |
| Camera | Lola Banks Alvarez | Assistant Camera |
| Camera | Barbara Pita | Grip |
| Camera | Gregory Borges | Best Boy Grip |
| Lighting | Vincent Caraccio | Rigging Grip |
| Camera | Amaya Chenu | Second Assistant "A" Camera |
| Camera | Laura Eraud | Second Assistant "B" Camera |
| Camera | Loïc de Lame | Digital Imaging Technician |
| Camera | Jon Graham | Drone Pilot |
| Camera | Emilie Jackson | BTS Videographer |
| Lighting | Keith McNicholas | Electrician |
| Camera | Nicole Rivelli | Still Photographer |
| Camera | Phil Oetiker | Camera Operator |
| Camera | Stacy Mize | First Assistant "A" Camera |
| Camera | Cheryn Park | First Assistant "B" Camera |
| Lighting | Davis Moody | Electrician |
| Lighting | Keith W. Rodriguez | Rigging Grip |
| Crew | Grgo Sevo | Drone Operator |
| Camera | Carla Stile | Grip |
| Camera | Robert Stile | Key Grip |
| Camera | Kevin Wilson | Second Assistant "A" Camera |
| Costume & Make-Up | Charlene Cephus | Set Costumer |
| Costume & Make-Up | Verine Dande | Costume Assistant |
| Costume & Make-Up | Elizabeth Howell | Tailor |
| Costume & Make-Up | Jay James | Truck Costumer |
| Costume & Make-Up | Kareem James | Other |
| Costume & Make-Up | Liana C. John | Other |
| Costume & Make-Up | Marisa Lerette | Tailor |
| Costume & Make-Up | Chris Mahnken | Costume Coordinator |
| Costume & Make-Up | Aishwarya Shree Sharma-Porter | Key Costumer |
| Costume & Make-Up | Taurie Small | Costumer |
| Costume & Make-Up | Allegra Starobin | Costumer |
| Costume & Make-Up | Nadia Tulin | Assistant Costume Designer |
| Costume & Make-Up | Shanice Warren | Costume Assistant |
| Costume & Make-Up | Trish Williams | Costumer |
| Editing | Lara Karamardian | Assistant Editor |
| Editing | Wedge Wegman | Dailies Operator |
| Editing | Ray Stanton | Other |
| Editing | India Master | Other |
| Production | Elizabeth Bendelac | Assistant Location Manager |
| Production | George Beno | Location Assistant |
| Production | Jay Horne | Assistant Location Manager |
| Production | Henry Winnik | Location Manager |
| Sound | Connor Warren Smith | Vocals |
| Sound | Gerald White | Vocals |
| Directing | Michele Haberman | Script Supervisor |
| Production | Niko Borhi | Accountant |
| Crew | Erin Elle | Stand In |
| Production | Steven Bosch | Production Secretary |
| Directing | Jack Cherry | Assistant Director |
| Crew | Johnathon Dragonette | Production Office Assistant |
| Art | Robin Fuqua | Painter |
| Crew | Darlene Dempsey | Health and Safety |
| Production | Georgina Helewa | Payroll Accountant |
| Crew | Justin Jasiewicz | Stand In |
| Crew | John Martineau | Stand In |
| Production | Jessica Howery | Production Coordinator |
| Crew | Mehran Jafari | Production Office Assistant |
| Production | Rob Meisenholder | Production Accountant |
| Production | Danielle McGowan | Location Assistant |
| Production | Greg Outcalt | Production Supervisor |
| Crew | Dominique Saint Malo | Clearances Coordinator |
| Production | Cristopher Sawyer | Second Assistant Accountant |
| Production | Daniel Shepherd | Payroll Accountant |
| Production | Sandra Sosa | Assistant Production Coordinator |
| Production | Nancy A. Terriberry | First Assistant Accountant |
| Production | Alex Vecchio | Second Assistant Accountant |
| Crew | Aidan C. Williams | Production Office Assistant |
| Production | L.A. Wolfman | Assistant Production Coordinator |
| Production | Kevin Zipper | Producer's Assistant |
| Crew | Ashley Pynn | Stunt Double |
| Sound | Joseph Bishara | Original Music Composer |
| Editing | Michel Aller | Editor |
| Editing | Derek Ambrosi | Editor |
| Production | Jon Romano | Co-Producer |
| Production | Jennifer Scudder Trent | Co-Producer |
| Production | Derek Ambrosi | Executive Producer |
| Camera | Autumn Eakin | Director of Photography |
| Production | Terri Taylor | Casting |
| Art | Beth Kushnick | Set Decoration |
| Costume & Make-Up | Susie Bua | Makeup Artist |
| Costume & Make-Up | Denna Olivieri | Makeup Artist |
| Costume & Make-Up | Jessica Paige Goodin | Special Effects Makeup Artist |
| Art | Corinne Fortunato | Sculptor |
| Sound | Fletcher Sheridan | Vocals |
| Sound | Dan Raziel | Music Editor |
| Sound | DeVoe Yates | Music Supervisor |
| Sound | Henry van Roden | Music Supervisor |
| Sound | Todd Honeycutt | Vocals |
| Crew | Alia Azamat Ashkenazi | Additional Script Supervisor |
| Editing | Emily Bailey | Colorist |
| Production | Zac Gobetz | Finishing Producer |
| Crew | Tyler Ferguson | Post Production Assistant |
| Editing | Gregory Caligiuri | Editorial Production Assistant |
| Production | Hunter Lydon | Extras Casting |
| Production | Lucy Pho | Extras Casting Coordinator |
| Production | Gail Quintos | Casting Assistant |
| Production | Susan Boyajian | ADR Voice Casting |
| Lighting | Gregory Borges | Rigging Grip |
| Lighting | Justin Keller | Rigging Gaffer |
| Lighting | Simon Rubenstein | Electrician |
| Camera | Michael Haggerty | Dolly Grip |
| Lighting | Charles Bryant | Lighting Technician |
| Visual Effects | Jonas Schimpf | Compositing Lead |
| Visual Effects | Daniel L. Smith | Digital Compositor |
| Visual Effects | Eion-Ray Patterson | Digital Compositor |
| Visual Effects | Kollen Wasylean | Digital Compositor |
| Visual Effects | Amelia Ealovega | Digital Compositor |
| Visual Effects | Dario Fontanella | Digital Compositor |
| Visual Effects | Daniel Berkowitz | Compositing Artist |
| Visual Effects | Bryan Binder | Visual Effects Producer |
| Visual Effects | Viktor Petrov | Pipeline Technical Director |
| Directing | Riley Flanagan | Second Second Assistant Director |
| Crew | Daniel Hargrave | Stunt Coordinator |
| Directing | Stephen Harrison | First Assistant Director |
