导演 史蒂夫·马蒂诺

导演 詹姆斯·海沃德

Horton (voice) 金·凯瑞

Mayor (voice) 史蒂夫·加瑞尔

Kangaroo (voice) 卡罗尔·伯内特

Vlad (voice) 威尔·阿内特

Morton (voice) 塞斯·罗根

Councilman / Yummo Wickersham (voice) 丹·福格勒

Dr. Mary Lou Larue (voice) 艾拉·菲舍尔

Tommy (voice) 乔纳·希尔

Sally O'Malley (voice) 艾米·波勒

Mrs. Quilligan (voice) 杰米·普莱斯利

Narrator (voice) Charles Osgood

Rudy (voice) Josh Flitter

Miss Yelp (voice) 尼西·纳什

JoJo (voice) Jesse McCartney

Hedy / Hooly (voice) Shelby Adamowsky

Old Time Who (voice) Jack Angel

Helen (voice) Caitlin Rose Anderson

Heather (voice) Emily Anderson

Town Cryer (voice) 揚·羅伯森

Who (voice) John Cygan

Another Who (voice) 杰斯·哈梅尔

Who Mom (voice) 黛比·德里贝里

Hildy / Holly (voice) Samantha Droke

Who Kid (voice) 凯伦·狄歇爾

Wickersham Guard 1 (voice) Marshall Efron

Willie Bear (voice) Bill Farmer

Joe (voice) Jason Fricchione

Who Girl (voice) Heather Goldenhersh

Helga (voice) 赛琳娜·戈麦斯

Obnoxious Who (voice) 詹姆斯·海沃德

Katie (voice) 乔伊·金

Heidi / Haley (voice) Christina Martino

Hanna (voice) Ellie Martino

Glummox Mom (voice) 拉瑞尼·纽曼

Wickersham Guard 2 (voice) Tim Nordquist

Angela (voice) 科琳·欧肖内希

Jessica (voice) Laura Ortiz

The Dentist (voice) Joe Pasquale

Who Child #1 (voice) Connor Anderson

Additional Voices (voice) Isabella Acres

Additional Voices (voice) 鲍伯·伯根

Additional Voices (voice) Jeff Biancalana

Additional Voices (voice) 麦蒂森·达文波特

Additional Voices (voice) Teresa Ganzel

Additional Voice (voice) Kathy Graves Toon

Additional Voices (voice) Sherry Lynn

Additional Voices (voice) 丹尼·曼恩

Additional Voices (voice) 莫娜·马歇尔

Additional Voices (voice) Mickie McGowan

Additional Voices (voice) 麦迪逊·佩蒂斯

Additional Voices (voice) Grace Rolek

Additional Voices (voice) Jennessa Rose

Additional Voices (voice) 艾莉尔·温特

Jojo (singing voice) (uncredited) Fletcher Sheridan