Hoewel Kevin 23 persoonlijkheden kent die zijn vertrouwde psychiater Dr. Fletcher heeft aangetoond, bezit hij er nog een die op het punt staat zich te ontwikkelen en alle andere over te nemen.
| Directing | M. Night Shyamalan | Director |
| Writing | M. Night Shyamalan | Writer |
| Editing | Luke Ciarrocchi | Editor |
| Art | Mara LePere-Schloop | Production Design |
| Costume & Make-Up | Paco Delgado | Costume Design |
| Sound | Rodrigo Díaz | ADR & Dubbing |
| Crew | Kurt Wunder | Special Effects Coordinator |
| Production | Steven Schneider | Executive Producer |
| Production | Douglas Aibel | Casting |
| Sound | Tod A. Maitland | Sound Mixer |
| Art | Jennifer Engel | Set Decoration |
| Sound | Alex Alcántara | ADR & Dubbing |
| Production | Jason Blum | Producer |
| Art | Dennis Madigan | Set Decoration |
| Production | Phillip Dawe | Executive In Charge Of Post Production |
| Production | M. Night Shyamalan | Producer |
| Production | John Burton West | Unit Production Manager |
| Production | Ashwin Rajan | Executive Producer |
| Art | Dave Kellom | Art Department Coordinator |
| Art | Paul Maiello | Construction Coordinator |
| Sound | Jerry Yuen | Boom Operator |
| Art | Nicole Reed LeFevre | Set Designer |
| Crew | Wyatt Sprague | Sound Recordist |
| Crew | Anteneh Adamu | Compositors |
| Crew | Matthew Shapiro | Post Production Supervisor |
| Directing | Nicole Agostino | Assistant Director |
| Art | Jesse Rosenthal | Art Direction |
| Sound | Toño Cubillo | ADR & Dubbing |
| Visual Effects | Ed Mendez | Visual Effects Supervisor |
| Visual Effects | Colton Miller | VFX Supervisor |
| Visual Effects | Richard Aponte | VFX Artist |
| Visual Effects | Jennifer Wessner | Visual Effects Producer |
| Crew | Tyler Lockard | Compositors |
| Crew | Stephen Izzi | Stunts |
| Crew | Manny Siverio | Stunt Coordinator |
| Production | Colleen Kay | Casting Associate |
| Camera | Michael Leonard | First Assistant Camera |
| Lighting | Thomas Devine | Electrician |
| Camera | Andy Hensler | Additional Camera |
| Camera | Linda Källérus | Still Photographer |
| Camera | Daniel Rieser | Grip |
| Camera | Kyle Rudolph | Camera Operator |
| Lighting | Ryan 'Sparks' Lynch | Lighting Technician |
| Camera | Ken McCallum | Dolly Grip |
| Camera | Jon Sibert | Key Grip |
| Sound | Lawrence Zipf | Sound Effects Editor |
| Costume & Make-Up | Diane Dixon | Hair Department Head |
| Costume & Make-Up | Pamela Peitzman | Makeup Department Head |
| Art | Susannah McCarthy | Property Master |
| Costume & Make-Up | Angeline Zeigler | Set Costumer |
| Art | Aaron Becker | Title Designer |
| Costume & Make-Up | Kara Morasco | Tailor |
| Art | Sharon Potts | Assistant Property Master |
| Costume & Make-Up | Teresa Binder Westby | Assistant Costume Designer |
| Visual Effects | Rachel Ambelang | VFX Editor |
| Sound | Pepe Pleguezuelos | Supervising Dialogue Editor |
| Camera | Mike Gioulakis | Director of Photography |
| Costume & Make-Up | Rita Squitiere | Costume Supervisor |
| Directing | Charles S. Rowe | Script Supervisor |
| Production | Jason Loftus | Local Casting |
| Editing | Bryan Baker | Assistant Editor |
| Production | Buddy Patrick | Executive Producer |
| Production | Staci Hagenbaugh | Location Manager |
| Production | Henry Russell Bergstein | Casting Associate |
| Editing | Kathryn Cates | Assistant Editor |
| Sound | West Dylan Thordson | Original Music Composer |
| Costume & Make-Up | Ray Santoleri | Makeup Artist |
| Art | Joshua Clarke | Location Scout |
| Crew | Alejandro Monzon | Compositors |
| Costume & Make-Up | Janice Innella | Key Hair Stylist |
| Production | Dom Catanzarite | Associate Producer |
| Crew | Mark Lieberman | Compositors |
| Sound | Steve F.B. Smith | Sound Designer |
| Production | Kevin Scott Frakes | Executive Producer |
| Sound | Susan Jacobs | Music Supervisor |
| Production | Diane Heery | Local Casting |
| Camera | John Baer | Still Photographer |
| Production | Marc Bienstock | Producer |
| Sound | Skip Lievsay | Supervising Sound Editor |
| Art | Brick Mason | Storyboard Artist |
| Sound | Michael Feuser | Dialogue Editor |
| Production | Marc Bienstock | Unit Production Manager |
| Directing | John Rusk | First Assistant Director |
| Directing | Amy Lauritsen | Second Assistant Director |
| Crew | Zack Roberts | Stunts |
| Crew | Chris Colombo | Stunts |
| Crew | Roberto Lopez | Stunts |
| Crew | Stephen Mann | Stunts |
| Crew | John McEnerney | Stunts |
| Editing | Michael Hatzer | Digital Colorist |
