 | Liam Neeson als Dr. David Marrow |
 | Lili Taylor als Eleanor ‘Nell’ Vance |
 | Catherine Zeta-Jones als Theodora |
 | Owen Wilson als Luke Sanderson |
 | Bruce Dern als Mr. Dudley |
 | Marian Seldes als Mrs. Dudley |
 | Alix Koromzay als Mary Lambetta |
 | Todd Field als Todd Hackett |
 | Virginia Madsen als Jane |
 | Michael Cavanaugh als Dr. Malcolm Keogh |
 | Tom Irwin als Lou |
 | Charles Gunning als Hugh Crain |
 | Saul Priever als Ritchie |
 | M.C. Gainey als Large Man |
| Hadley Eure als Carolyn Crain |
| Kadina de Elejalde als Rene Crain |
| Alessandra Benjamin als Psych Patient #1 |
 | Karen S. Gregan als Psych Patient #2 |
 | Brandon Jarrett als Psych Patient #3 |
| Mary McNeal als Psych Patient #4 |
| William Minkin als Psych Patient #5 |
 | Debi Derryberry als Child (voice) |
 | Jessica Evans als Child (voice) |
 | Sherry Lynn als Child (voice) |
 | Miles Marsico als Child (voice) |
 | Courtland Mead als Child (voice) |
 | Kelsey Mulrooney als Child (voice) |
| Kyle McDougle als Child (voice) |
 | Hannah Swanson als Child (voice) |
 | Travis Tedford als Child (voice) (uncredited) |
| Jan de Bont | Director |
| David Self | Screenplay |
| Shirley Jackson | Novel |
| Susan Arnold | Producer |
| Jan de Bont | Executive Producer |
| Samuel Z. Arkoff | Executive Producer |
| Karl Walter Lindenlaub | Director of Photography |
| Michael Kahn | Editor |
| Donna Roth | Producer |
| Colin Wilson | Producer |
| Jerry Goldsmith | Original Music Composer |
| Randi Hiller | Casting |
| Eugenio Zanetti | Production Design |
| Marty P. Ewing | Associate Producer |
| Michael Trent | Assistant Editor |
| Phil Tippett | Visual Effects Supervisor |
| Martin Laing | Art Direction |
| Jonathan Lee | Art Direction |
| Troy Sizemore | Art Direction |
| Cindy Carr | Set Decoration |
| Ellen Mirojnick | Costume Design |
| Danny Ned Moore | Costume Design |
| Brynn McQuade | Art Department Coordinator |
| Stacey S. McIntosh | Construction Coordinator |
| Larry A. Cornick | Leadman |
| Gloria Ciraolo | Painter |
| François Audouy | Production Illustrator |
| Fred Arbegast | Sculptor |
| Mick Cukurs | Set Designer |
| Charles 'Chuck' Lungren | Standby Painter |
| Gregory Lundsgaard | Camera Operator |
| Jamie Barber | First Assistant Camera |
| Loren Corl | Grip |
| Jeremy Braben | Aerial Camera |
| Colin Anderson | Steadicam Operator |
| Frank Masi | Still Photographer |
| Deborah Hopper | Costume Supervisor |
| Karyn Huston | Hairstylist |
| Judith A. Cory | Key Hair Stylist |
| Jean Ann Black | Makeup Artist |
| Ann Culotta | Set Costumer |
| Edmond Scott Ratliff | Set Dressing Artist |
| Justin Ditter | Wigmaker |
| Scott Lafferty | Carpenter |
| Orlando Chongo | Craft Service |
| Joy Ellison | Dialect Coach |
| Chet Badalato | Driver |
| Dennis Marchant | Picture Car Coordinator |
| Kevin Du Toit | Post Production Assistant |
| Erica Frauman | Post Production Supervisor |
| Jim Turner | Production Controller |
| Gerry Taylor | Projection |
| Alan Alvarado | Propmaker |
| Brian Payne | Property Master |
| Marie Nashold | Set Medic |
| John Frazier | Special Effects Coordinator |
| Candace Brokaw | Stand In |
| Tim A. Davison | Stunt Coordinator |
| Sandy Berumen | Stunts |
| Steve Ginsberg | Systems Administrators & Support |
| Gary Shephard | Transportation Coordinator |
| Marty P. Ewing | Unit Production Manager |
| Amanda Brand | Unit Publicist |
| Mark Suveg | Video Assist Operator |
| John Bartle | Visual Effects Editor |
| Jana Spotts | Assistant Director |
| Jonathan Null | Dialogue Editor |
| Brian Dettor | Editorial Production Assistant |
| Richard Byard | First Assistant Editor |
| James Barrett | Electrician |
| Stewart Hadley | Gaffer |
| Steven Strong | Lighting Technician |
| Brian Lukas | Rigging Gaffer |
| Jeff Brinker | Rigging Grip |
| Peter M. Tobyansen | Location Manager |
| Elena Holden Tuens | Production Accountant |
| Marilyn Clarke | Production Coordinator |
| Roger Rohrbach | Production Manager |
| Larry Singer | ADR & Dubbing |
| Harrison D. Marsh | Boom Operator |
| Michael Axinn | Assistant Sound Editor |
| Darrell Hall | Music Editor |
| Alexander Courage | Orchestrator |
| Gary Rydstrom | Sound Designer |
| Teresa Eckton | Sound Effects Editor |
| Frank E. Eulner | Supervising Sound Editor |
| Wes Burian | 3D Artist |
| Blair Clark | Animation Supervisor |
| Alan Boucek | Digital Compositors |
| David Rosenthal | I/O Supervisor |
| Martin Gutteridge | Special Effects Supervisor |
| Alexandra Altrocchi | Visual Effects Coordinator |
| Roni McKinley | Visual Effects Producer |
| Scott Farrar | Visual Effects Supervisor |
| Shannon Mills | Sound Design Assistant |
| Paula Lucchesi | Visual Effects Art Director |
| Randy Link | Animation |
| David John | Production Sound Mixer |
| David Orr | Color Timer |
| Tomas Voth | Supervising Art Director |
| Gary Ferraro | Chef |
| Donald Dowd | Editorial Services |
| Juan Peralta | Sound Mix Technician |
| Lynda Foote | Key Costumer |
| Kate Hazell | Second Second Assistant Director |
| Michael Hansen | Assistant Property Master |
| Cristiano Donzelli | Conceptual Illustrator |
| Robert Allen | Construction Buyer |
| Karin L. McGaughey | Property Buyer |
| Dean Lakoff | Swing |
| Denise Whiting | ADR Editor |
| Robert Deschaine | ADR Mixer |
| Tami Treadwell | ADR Recordist |
| Dennie Thorpe | Foley Artist |
| Tony Eckert | Foley Mixer |
| Frank 'Pepe' Merel | Foley Recordist |
| Sandina Bailo-Lape | Foley Supervisor |
| Taylor Ball | Special Effects Assistant |
| Jem Lovett | Special Effects Technician |
| Jimmy N. Roberts | Stunt Double |
| Keith Ogier | Additional Second Assistant Camera |
| Renzo Spirit Buffalo | Assistant Camera |
| Dana Baker | Best Boy Grip |
| Heather Green | Camera Loader |
| Andreas Crawford | Dolly Grip |
| Paul DeMarte | Second Assistant Camera |
| Mickie McGowan | ADR Voice Casting |
| Tanaz Akhlaghi | Casting Assistant |
| Bryan H. Carroll | Assistant Editor |
| Gary Burritt | Negative Cutter |
| Sven E. Fahlgren | Post Production Coordinator |
| Jerry Goldsmith | Conductor |
| Nick Vidar | Music Programmer |
| Kenneth Hall | Supervising Music Editor |
| Patricio M. Farrell | Art Department Production Assistant |
| Charlie Araki | Assistant Accountant |
| Dan Riffel | Assistant Chief Lighting Technician |
| Danielle Fox | Assistant Production Coordinator |
| Brennan Doyle | Compositing Supervisor |
| Douglas Epps | Head of Research |
| Lauren Raquel Pusich | Intern |
| Matt Floyd | Key Rigging Grip |
| Ben Smith | Key Set Production Assistant |
| Daniel Myers Boone | Payroll Accountant |
| Kirk Jung | Production Assistant |
| Steven R. Molen | Production Executive |
| Danika Kohler Doman | Production Secretary |
| Alessandra Taddei | Researcher |
| Dan Feinstein | Rotoscoping Artist |
| Robert Consing | Storyboard Artist |
| Gary Summers | Sound Re-Recording Mixer |
| Ethan van der Ryn | Supervising Sound Editor |
| Anita Hart | Stunts |
| Jennifer Caputo | Stunts |
| Troy Robinson | Utility Stunts |
| Josh McLaglen | First Assistant Director |
| Joanna Shelmidine | Stunt Double |
