On September 24, 2026
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Cast of Horton Hears a Who!
25 credited roles
Jim Carrey
Horton (voice)
Steve Carell
Mayor (voice)
Carol Burnett
Kangaroo (voice)
Will Arnett
Vlad (voice)
Seth Rogen
Morton (voice)
Dan Fogler
Councilman / Yummo Wickersham (voice)
Isla Fisher
Dr. Mary Lou Larue (voice)
Jonah Hill
Tommy (voice)
Amy Poehler
Sally O'Malley (voice)
Jaime Pressly
Mrs. Quilligan (voice)
Charles Osgood
Narrator (voice)
Josh Flitter
Rudy (voice)
Niecy Nash
Miss Yelp (voice)
Jesse McCartney
JoJo (voice)
SA
Shelby Adamowsky
Hedy / Hooly (voice)
Jack Angel
Old Time Who (voice)
CR
Caitlin Rose Anderson
Helen (voice)
EA
Emily Anderson
Heather (voice)
Jan Rabson
Town Cryer (voice)
John Cygan
Who (voice)
Jess Harnell
Another Who (voice)
Debi Derryberry
Who Mom (voice)
Samantha Droke
Hildy / Holly (voice)
Karen Disher
Who Kid (voice)
Marshall Efron
Wickersham Guard 1 (voice)
