Ron Perlman Red Cap (voice) (uncredited)
Freddie Highmore Jared Grace / Simon Grace
Martin Short Thimbletack (voice)
Seth Rogen Hogsqueal (voice)
Nick Nolte Mulgarath
Mary-Louise Parker Helen Grace
Michael Lantieri Special Effects Supervisor
David Strathairn Arthur Spiderwick
Andrew McCarthy Richard Grace
Andy Nelson Sound Re-Recording Mixer
Mark Waters Director
Phil Tippett Animation Supervisor
Sarah Bolger Mallory Grace
Mark Mangini Sound Designer
Karey Kirkpatrick Producer, Screenplay
Larry Franco Producer
Joanna Johnston Costume Design
James Horner Original Music Composer
Pablo Helman Visual Effects Supervisor
Tyler Patrick Jones Additional Performer
Joan Plowright Aunt Lucinda Spiderwick
Michael Kahn Editor
Anna Behlmer Sound Re-Recording Mixer
Fred Berger Production Assistant
Dick Bernstein Music Editor
Robin D. Cook Local Casting
Mark Canton Producer
Kevin Yagher Makeup Effects
Caleb Deschanel Director of Photography
John Sayles Screenplay
Jim Passon Color Timer
Alan Howarth Special Sound Effects
Bob E. Krattiger Gaffer
Ben Rosenblatt Post Production Supervisor
Joey Box Stunt Coordinator
Tom C. Peitzman Co-Producer
Adrien Morot Special Effects Makeup Artist
Piero Mura Sound Effects Editor
David McKeown Stunt Coordinator
James D. Bissell Production Design
Christopher T. Welch Supervising ADR Editor, Supervising Dialogue Editor
Benjamin Rosenberg First Assistant Director
Nathalie Girard Stunts
Mariah Inger Nurse
Francois Archambault Steadicam Operator, Camera Operator
Louis Marion Sound Mixer
Jim Kontos Unit Manager
Peter J. Silbermann Unit Publicist
Marci Liroff Casting
Josette Perrotta Co-Producer, Unit Production Manager
Christopher Raimo Visual Effects Producer
Julie Feiner Dialogue Editor
Val Kuklowsky Dialogue Editor
Mark Coffey Assistant Sound Editor
Réjean Goderre Key Hair Stylist
Caroline Aquin Special Effects Makeup Artist
Sarah Broshar Assistant Editor
Gilbert Larose Jr. Stunts
Takashi Seida Still Photographer
Ralph Osborn Dialogue Editor
Isabelle Guay Supervising Art Director
Sherry Hitch Digital Compositor
Andy Sisul First Assistant Sound Editor
Tim Alexander Visual Effects Supervisor
Mickael Coedel Animation
Annick Chartier Makeup Department Head
Lucie Tremblay Set Designer
Jim Henrikson Music Editor
Philippe Lord Set Decoration
Kimi Webber Script Supervisor
Hélène Lamarre Art Department Coordinator
Steve Barnett Co-Producer