 Danny DeVitoThe Lorax (voice) | The Lorax (voice) |
 Ed HelmsOnce-ler (voice) | Once-ler (voice) |
 Zac EfronTed Wiggins (voice) | Ted Wiggins (voice) |
 Rob RiggleMr. Aloysius O'Hare (voice) | Mr. Aloysius O'Hare (voice) |
 Taylor SwiftAudrey (voice) | Audrey (voice) |
 Jenny SlateMrs. Wiggins (voice) | Mrs. Wiggins (voice) |
 Betty WhiteGrammy Norma (voice) | Grammy Norma (voice) |
 Nasim PedradOnce-ler's Mom (voice) | Once-ler's Mom (voice) |
 Joel Swetow1st Marketing Guy (voice) | 1st Marketing Guy (voice) |
 Michael Beattie2nd Marketing Guy (voice) | 2nd Marketing Guy (voice) |
 Elmarie WendelAunt Grizelda (voice) | Aunt Grizelda (voice) |
 Dave B. Mitchell1st Commercial Guy (voice) | 1st Commercial Guy (voice) |
 Dempsey Pappion2nd Commercial Guy (voice) | 2nd Commercial Guy (voice) |
 Danny CookseyBrett / Chet (voice) | Brett / Chet (voice) |
 Stephen TobolowskyUncle Ubb (voice) | Uncle Ubb (voice) |
 Chris RenaudForest Animals (voice) | Forest Animals (voice) |
 Sherry LynnAdditional Voices (voice) | Additional Voices (voice) |
 Mickie McGowanAdditional Voices (voice) | Additional Voices (voice) |
 Jack AngelAdditional Voices (voice) | Additional Voices (voice) |
 Bob BergenAdditional Voices (voice) | Additional Voices (voice) |
 Debi DerryberryAdditional Voices (voice) | Additional Voices (voice) |
 Danny MannAdditional Voices (voice) | Additional Voices (voice) |
 Fletcher SheridanCy (voice) | Cy (voice) |
 John CyganAdditional Voices (voice) | Additional Voices (voice) |
 Bill FarmerAdditional Voices (voice) | Additional Voices (voice) |
 Jess HarnellAdditional Voices (voice) | Additional Voices (voice) |
 Mona MarshallAdditional Voices (voice) | Additional Voices (voice) |
 Laraine NewmanAdditional Voices (voice) | Additional Voices (voice) |
 Jan RabsonAdditional Voices (voice) | Additional Voices (voice) |
 Claira Nicole TitmanAdditional Voices (voice) | Additional Voices (voice) |
