Freddie Highmore Jared Grace / Simon Grace
Ron Perlman Red Cap (voice) (uncredited)
Seth Rogen Hogsqueal (voice)
David Strathairn Arthur Spiderwick
Nick Nolte Mulgarath
Mary-Louise Parker Helen Grace
Andrew McCarthy Richard Grace
Sarah Bolger Mallory Grace
Martin Short Thimbletack (voice)
Karey Kirkpatrick Producer, Screenplay
Mark Waters Director
James Horner Original Music Composer
Andy Nelson Sound Re-Recording Mixer
Phil Tippett Animation Supervisor
Larry Franco Producer
Jim Passon Color Timer
David Berenbaum Screenplay
Joanna Johnston Costume Design
Fred Berger Production Assistant
Joan Plowright Aunt Lucinda Spiderwick
Anna Behlmer Sound Re-Recording Mixer
Caleb Deschanel Director of Photography
Tyler Patrick Jones Additional Performer
Michael Kahn Editor
Sherry Hitch Digital Compositor
Mark Mangini Sound Designer
Mark Canton Producer
Marci Liroff Casting
Joey Box Stunt Coordinator
Adrien Morot Special Effects Makeup Artist
Piero Mura Sound Effects Editor
Ellen Goldsmith-Vein Producer
Kimi Webber Script Supervisor
Shawn Kelly Animation
Louis Craig Special Effects Supervisor
Robin D. Cook Local Casting
Bob E. Krattiger Gaffer
Steve Blalock Stunt Coordinator
David McKeown Stunt Coordinator
Christopher T. Welch Supervising ADR Editor, Supervising Dialogue Editor
Alain Brochu Head Carpenter
Alan Howarth Special Sound Effects
Pablo Helman Visual Effects Supervisor
Jim Henrikson Music Editor
Takashi Seida Still Photographer
John Sayles Screenplay
Julia Pistor Executive Producer
Louis Marion Sound Mixer
Michael Lantieri Special Effects Supervisor
Brian Kalin O'Connell Character Designer
Nathalie Girard Stunts
Peter J. Silbermann Unit Publicist
Mark Binder Special Sound Effects
Benjamin Rosenberg First Assistant Director
Bethan Mowat Second Assistant Director
Réjean Goderre Key Hair Stylist
Avram D. Gold Dialogue Editor
Julie Feiner Dialogue Editor
Ben Rosenblatt Post Production Supervisor
Caroline Aquin Special Effects Makeup Artist
Robert Stecko Camera Operator
Mark Coffey Assistant Sound Editor
Daniel Hamelin Set Decoration
Marie-Elaine Bailly Production Coordinator
Rodrigo Ortiz-Parraga Assistant Sound Editor
Kevin Yagher Makeup Effects
Christa Munro Art Direction
Francois Archambault Steadicam Operator, Camera Operator
Ralph Osborn Dialogue Editor
James D. Bissell Production Design
Natalie Baillie Digital Compositor
Sarah Broshar Assistant Editor