 | Gabriel Damon als Nemo (voice) |
 | Mickey Rooney als Flip (voice) |
 | René Auberjonois als Professor Genius (voice) |
 | Danny Mann als Icarus (voice) |
 | Laura Mooney als Princess Camille (voice) |
| Bernard Erhard als King Morpheus (voice) |
| Bill Martin als Nightmare King (voice) |
 | Alan Oppenheimer als Oomp (voice) |
 | Michael Bell als Oompy (voice) |
 | Sidney Miller als Oompe (voice) |
 | Neil Ross als Oompa (voice) |
 | John Stephenson als Oompo / Dirigible Captain (voice) |
 | Jennifer Darling als Nemo's Mother (voice) |
| Greg Burson als Nemo's Father / Flap (voice) |
 | Sherry Lynn als Bon Bon (voice) |
| Guy Christopher als Courtier / Cop (voice) |
 | Nancy Cartwright als Page (voice) |
| Ellen Gerstell als Page (voice) |
 | Tress MacNeille als Elevator Creature (voice) |
 | Michael McConnohie als Etiquette Master (voice) |
 | Beau Weaver als Teacher #1 / Cop (voice) |
 | Michael Gough als Teacher #2 (voice) |
 | Kathleen Freeman als Dance Teacher (voice) |
| Michael Sheehan als Fencing Master (voice) |
 | June Foray als Librarian (voice) |
 | Gregg Berger als Equestrian Master (voice) |
 | Bert Kramer als Goblin General (voice) |
 | Bever-Leigh Banfield als Woman (voice) |
| Kathy Levin als Singer (voice) |
| Takeshi Seyama | Editor |
| Kuniyuki Ishii | Key Animation |
| Shunzo Kato | Co-Producer |
| Richard M. Sherman | Songs |
| Robert B. Sherman | Songs |
| Chris Columbus | Screenplay |
| Masafumi Mima | Sound Editor |
| Jean Giraud | Conceptual Design |
| Jean Giraud | Story |
| Ray Bradbury | Writer |
| Richard Outten | Screenplay |
| Yutaka Fujioka | Producer |
| Yutaka Fujioka | Story |
| Hiroko Kondo | Color Designer |
| Masanori Hata | Director |
| Masami Hata | Director |
| Shizuo Kurahashi | Sound Effects Editor |
| William T. Hurtz | Director |
| Sander Schwartz | Executive In Charge Of Production |
| Mikio Mori | Dolby Consultant |
| Nizou Yamamoto | Art Direction |
| Toshio Nozaki | Background Designer |
| Winsor McCay | Writer |
| Nobuo Tomizawa | Animation Director |
| Thomas Chase | Original Music Composer |
| Steve Rucker | Original Music Composer |
| Toshitsugu Saida | Key Animation |
| Kazuhide Tomonaga | Animation Director |
| Yuichiro Yano | Key Animation |
| Hiroyuki Aoyama | Key Animation |
| Osamu Nabeshima | Key Animation |
| Hiroyuki Horiuchi | Key Animation |
| Vic Radulich | ADR Recording Engineer |
| Atsuko Tanaka | Key Animation |
| Kunio Ando | Sound Mixer |
| Hiroshi Shimizu | Key Animation |
| Keiko Tomizawa | Key Animation |
| Yoshitake Iwakami | Animation |
| Osamu Okubo | Key Animation |
| Hiroaki Noguchi | Key Animation |
| Roy Prendergast | Music Editor |
| Kazuyoshi Takeuchi | Key Animation |
| Hajime Hasegawa | Director of Photography |
| Fumio Iida | Key Animation |
| Jouji Yanase | Key Animation |
| Catt LeBaigue | ADR Recording Engineer |
| Sadahiko Sakamaki | Key Animation |
| Noboru Takano | Key Animation |
| Koji Takeuchi | Associate Producer |
