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Guionista
Jeffrey Price
Guionista
Peter S. Seaman
Autor
Dr. Seuss
Clint Howard
Whobris
Bill Irwin
Lou Lou Who
Kevin Isola
Tree Trimmer
Mary Stein
Miss Rue Who
Christine Baranski
Martha May Whovier
Tim Blaney
Puppeteer
Charlie Croughwell
Balloon Who
Rick Baker
Puppeteer
Mindy Sterling
Clarnella
Rance Howard
Elderly Timekeeper
John Alexander
Shopper
Mason Lucero
Who Boy
Michaela Gallo
Who Schoolgirl
Q'Orianka Kilcher
Little Choir Member
John Short
Tiny Who Man
Landry Allbright
8-Year-Old Martha May Whovier
Josh Ryan Evans
8-Year-Old Grinch
Jim Meskimen
Officer Wholihan
Jeremy Howard
Drew Lou Who
Rachel Winfree
Rose
Caroline Williams
Tiny Who Woman
Suzanne Krull
Shopper
Lillias White
Shopper
Jessica Sara
Sophie
David Costabile
Biker Who
Lacey Kohl
Christina Whoterberry
T.J. Thyne
Stu Lou Who
Michael Dahlen
Customer
Steve Kehela
Shopper
James Ritz
Crazy Mose
Nadja Pionilla
Junie
Jurgen Heimann
Puppeteer
James Horner
Compositor
Jim Carrey
Intérprete (Banda sonora)
Mariah Carey
Música de los títulos de crédito
Ron Howard
Productor
Brian Grazer
Productor
Linda Fields
Productor asociado
Aldric La'Auli Porter
Productor asociado
David Womark
Productor asociado
Louisa Velis
Productor asociado
Donald Peterman
Director de fotografía
Rita Ryack
Vestuario
Daniel P. Hanley
Montador
Mike Hill
Montador
Kazuhiro Tsuji
Maquillador
Rick Baker
Maquillador
Gail Ryan
Maquillador
Merideth Boswell
Decorador
Tom McGrath
Realizador/Guionista
United International Pictures UIP
Distribution
Universal Pictures
InternationalDistributionExports
United International Pictures (UIP)
InternationalDistributionExports
Imagine Entertainment
Production