Jim Carrey

as Grinch

Taylor Momsen

as Cindy Lou Who

Jeffrey Tambor

as Mayor Augustus Maywho

Christine Baranski

as Martha May Whovier

Bill Irwin

as Lou Lou Who

Molly Shannon

as Betty Lou Who

Clint Howard

as Whobris

Josh Ryan Evans

as 8-Year-Old Grinch

Mindy Sterling

as Clarnella

Ron Howard

Director