Thomas Dekker

as Littlefoot (voice)

Kenneth Mars

as Grandpa (voice)

Miriam Flynn

as Grandma (voice)

Jeff Bennett

as Petrie (voice)

Jim Cummings

as Sierra (voice)

Aria Noelle Curzon

as Ducky (voice)

Anndi McAfee

as Cera (voice)

John Ingle

as Cera's Dad (voice)

Charles Kimbrough

as Rainbow Face #1 (voice)

Patti Deutsch

as Rainbow Face #2 (voice)

Tress MacNeille

as Ducky's Mom (voice)

Michael York

as Pterano (voice)

Rob Paulsen

as Spike / Rinkus (voice)

Zoë Gulliksen

as Lydia (voice)

B.J. Ward

as Rainbow Face #2 (singing voice)