Gabriel Damon as Nemo (voice)

Mickey Rooney as Flip (voice)

René Auberjonois as Professor Genius (voice)

Danny Mann as Icarus (voice)

Laura Mooney as Princess Camille (voice)

Bernard Erhard as King Morpheus (voice)

Bill Martin as Nightmare King (voice)

Alan Oppenheimer as Oomp (voice)

Michael Bell as Oompy (voice)

Sidney Miller as Oompe (voice)

Neil Ross as Oompa (voice)

John Stephenson as Oompo / Dirigible Captain (voice)

Jennifer Darling as Nemo's Mother (voice)

Greg Burson as Nemo's Father / Flap (voice)

Sherry Lynn as Bon Bon (voice)

Guy Christopher as Courtier / Cop (voice)

Nancy Cartwright as Page (voice)

Ellen Gerstell as Page (voice)

Tress MacNeille as Elevator Creature (voice)

Michael McConnohie as Etiquette Master (voice)

Beau Weaver as Teacher #1 / Cop (voice)

Michael Gough as Teacher #2 (voice)

Kathleen Freeman as Dance Teacher (voice)

Michael Sheehan as Fencing Master (voice)

June Foray as Librarian (voice)

Gregg Berger as Equestrian Master (voice)

Bert Kramer as Goblin General (voice)

Bever-Leigh Banfield as Woman (voice)

Kathy Levin as Singer (voice)

Beth Andersen as Singer (voice) (uncredited)

Bobbi Page as Singer (voice)