Jim Meskimen

Officer Wholihan

Jim Carrey

Grinch

Clint Howard

Whobris

Jeffrey Tambor

Mayor Augustus Maywho

Ron Howard

Director

Molly Shannon

Betty Lou Who

Jeremy Howard

Drew Lou Who

Deep Roy

Post Office Clerk

Mindy Sterling

Clarnella

Christine Baranski

Martha May Whovier

Bill Irwin

Lou Lou Who

Bryce Dallas Howard

Surprised Who

Todd Hallowell

Executive Producer

Rance Howard

Elderly Timekeeper

David Costabile

Biker Who

Rachel Winfree

Rose

T.J. Thyne

Stu Lou Who

Mason Lucero

Who Boy

Lacey Kohl

Christina Whoterberry

James Ritz

Crazy Mose

Taylor Momsen

Cindy Lou Who

Josh Ryan Evans

8-Year-Old Grinch

Nadja Pionilla

Junie

Michael Dahlen

Customer

Mary Stein

Miss Rue Who

Jessica Sara

Sophie