| 吉米·海沃德 | ||
| 史蒂夫·马丁诺 |
| rest of cast listed alphabetically: | ||
| 吉姆·凯瑞 | Horton (voice) | |
| Carol Burnett | Kangaroo (voice) | |
| 威尔·阿尔奈特 | (voice) | |
| 杰米·普莱斯利 | (voice) | |
| 阿德沃尔·阿吉纽依-艾格拜吉 | Town Crier (voice) | |
| 史蒂夫·卡莱尔 | The Mayor of Who-ville (voice) | |
| 丹尼·库克 | (voice) | |
| 伊拉·菲舍尔 | (voice) | |
| Dan Fogler | Yummo (voice) | |
| 艾米·波哈尔 | (voice) | |
| Seth Rogen | (voice) | |
| 乔什·弗雷特 | Rudy (voice) | |
| Selena Gomez | Mayor's daughter (voice) | |
| Joey King | Katie (voice) | |
| Samantha Droke | Mayor's Daughter (voice) | |
| Jonah Hill | (voice) | |
| Laura Ortiz | Jessica | |
| Shelby Adamowsky | The Mayor's Daughter |
| Ken Daurio | screenplay | |
| Dr. Seuss | story | |
| Cinco Paul | screenplay |
| Christopher Meledandri | executive producer | |
| 克里斯·伟基 | executive producer | |
| Audrey Geisel | executive producer | |
| Bob Gordon | producer |
| John Powell |
| Jeannine Berger | post-production supervisor | |
| Sean M. Murphy | assistant production manager | |
| Kane Lee | assistant production manager | |
| Jason Fricchione | assistant production manager |
| Tony Maki | storyboard artist |
| Thomas A. Carlson | music editor | |
| Derek Casari | adr engineer | |
| Sean England | foley recordist | |
| Dennis Leonard | supervising sound editor | |
| Randy Thom | supervising mixer |
| Marco Burbano | character technical director | |
| Ian D. Butterfield | materials technical director | |
| Dan Cayer | senior lighting/compositing: Blue Sky Studios | |
| Jane Chatot | character TA | |
| Eldar Cholich | lighting technical director | |
| Casey Dame | character technical director | |
| Jason Davies | character technical director | |
| Jonathan Davis | lighting technical director | |
| Diana Diriwaechter | materials technical director | |
| Mark Edwards | character technical director | |
| Ian Etra | character technical director | |
| Tamara Garabedian | fur technical director | |
| Kirk Garfield | visual effects supervisor | |
| Eric Grimenstein | fur technical director | |
| James Du | character technical director | |
| Brian A. Hill | materials technical director | |
| Todd Edward James Hill | character technical director | |
| Brien Hindman | senior modeler | |
| Ben Kilgore | character technical director | |
| Yu-Li Liao | character technical director | |
| Robin Luera | animator | |
| Erik Malvarez | senior character technical director | |
| David V. Mei | modeling supervisor | |
| Gregory Rizzi | animator | |
| Edward Robbins | modeler | |
| Aaron M. Ross | senior technical director: lighting | |
| Ari Rubenstein | digital compositor: Blue Sky Studios | |
| Jessica Sances | character animator | |
| Monika Sawyer | fur technical director | |
| Scott Sharp | senior character technical director | |
| Dave Strick | modeler | |
| Prapanch Swamy | fur technical director | |
| Radhika Thirunarayanan | materials technical director | |
| Paul-Jozef Torrevillas | lighting technical assistant | |
| Stephen Unterfranz | supervising character technical director | |
| Antelmo Villarreal | assembly TA | |
| Aaron Walsman | character technical director | |
| Jerril Yoo | senior character technical director | |
| Cosku Ozdemir | materials technical director: Blue Sky Studios (uncredited) | |
| Luis Pages | character technical director (uncredited) |
| Paul Ohrt | production executive | |
| Christopher Kappler | hr coordinator |