Freddie Highmore Jared Grace / Simon Grace
Seth Rogen Hogsqueal (voice)
Ron Perlman Red Cap (voice) (uncredited)
Nick Nolte Mulgarath
Daniel Hamelin Set Decoration
Mary-Louise Parker Helen Grace
Andrew McCarthy Richard Grace
Frédéric Amblard Set Designer
Jim Henrikson Music Editor
Martin Short Thimbletack (voice)
David Strathairn Arthur Spiderwick
Sarah Bolger Mallory Grace
Mark Canton Producer
Anna Behlmer Sound Re-Recording Mixer
Andy Nelson Sound Re-Recording Mixer
Pablo Helman Visual Effects Supervisor
Mark Mangini Sound Designer
Joan Plowright Aunt Lucinda Spiderwick
James Horner Original Music Composer
Michael Kahn Editor
Christopher Raimo Visual Effects Producer
Réjean Goderre Key Hair Stylist
Larry Franco Producer
Caleb Deschanel Director of Photography
Tom C. Peitzman Co-Producer
John Sayles Screenplay
Adrien Morot Special Effects Makeup Artist
Andy Sisul First Assistant Sound Editor
Louis Marion Sound Mixer
Nathalie Girard Stunts
Michèle St-Arnaud Location Manager
Tyler Patrick Jones Additional Performer
Christopher T. Welch Supervising ADR Editor, Supervising Dialogue Editor
Isabelle Guay Supervising Art Director
Dick Bernstein Music Editor
Jim Passon Color Timer
Peter J. Silbermann Unit Publicist
Piero Mura Sound Effects Editor
Mariah Inger Nurse
Ben Rosenblatt Post Production Supervisor
Phil Tippett Animation Supervisor
Fred Berger Production Assistant
Hélène Lamarre Art Department Coordinator
Josette Perrotta Co-Producer, Unit Production Manager
Mark Waters Director
Joanna Johnston Costume Design
Sherry Hitch Digital Compositor
Julie Feiner Dialogue Editor
Martine Giguère-Kazemirchuk Set Decoration
Brent Lambert Set Designer
Annick Chartier Makeup Department Head
Karey Kirkpatrick Producer, Screenplay
David Berenbaum Screenplay
Ralph Osborn Dialogue Editor
Avram D. Gold Dialogue Editor
Shawn Kelly Animation
Takashi Seida Still Photographer
Michael Lantieri Special Effects Supervisor
James D. Bissell Production Design
Robin D. Cook Local Casting
Lyssa J. Caster Production Accountant
Tod Fennell Helen's Co-Worker
David McKeown Stunt Coordinator
Jordy Benattar Young Lucinda Spiderwick
Kevin Yagher Makeup Effects
Louis Craig Special Effects Supervisor
Kimi Webber Script Supervisor
Simon Guilbault Set Designer
Joey Box Stunt Coordinator
Mickael Coedel Animation
Spiro Tsovras Production Assistant
Bruno Gatien Special Effects Makeup Artist