Horton Hears a Who! (film) › Cast
Jim Carrey
Horton
Steve Carell
Mayor of Who-ville
Amy Poehler
Salley O'Malley
Jesse McCartney
Jo Jo
Isla Fisher
Dr. Larue
Dan Fogler
Yummo
Will Arnett
Vlad
Seth Rogen
Morton
Jonah Hill
Tommy
Carol Burnett
Kangaroo
Charles Osgood
Narrator
Jaime Pressly
Mrs. Quilligan
Laura Ortiz
Jessica
Niecy Nash
Miss Yelp