The Lorax

Danny DeVito

The Once-ler

Ed Helms

Ted

Zac Efron

Mr. Aloysius O'Hare (voice)

Rob Riggle

Audrey

Taylor Swift

Grammy Norma

Betty White

Mrs. Wiggins (voice)

Jenny Slate

Once-ler's Mom

Nasim Pedrad

1st Marketing Guy

Joel Sweto

1st Marketing Guy (voice)

Joel Swetow

2nd Marketing Guy

Michael Beattie

1st Commercial Guy

Dave Mitchell

Aunt Grizelda (voice)

Elmarie Wendel

2nd Commercial Guy

Dempsey Pappion

Brett/Chet

Danny Cooksey

Uncle Ubb

Stephen Tobolowsky

Forest Animals

Chris Renaud

Additional Voices (voice)

Jack Angel

Additional Voices (voice)

Sherry Lynn

Additional Voices (voice)

Mickie McGowan

Additional Voices (voice)

Bob Bergen

Additional Voices (voice)

John Cygan

Debi Derryberry

Additional Voices (voice)

Bill Farmer

Additional Voices (voice)

Jess Harnell

Additional Voices (voice)

Danny Mann

Cy (voice)

Fletcher Sheridan

Additional Voices (voice)

Mona Marshall

Mickie T. McGowan

Additional Voices (voice)

Laraine Newman

Additional Voices (voice)

Jan Rabson

Additional Voices (voice)

Claira Nicole Titman

Jim Ward

Bengt Järnblad

Andreas Nilsson

Sarah Dawn Finer

Mikaela Ardai Jennefors

Göran Forsmark

Claire Wikholm

Henrik Ståhl

David Lenneman

Nick Atkinson

Ester Sjögren

Hasse Jonsson

Humming Fish

Monique Donnelly

Dan

Dan Navarro