Het visje Ponyo leeft samen met honderden broertjes en zusje in een afgesloten onderwaterwereld. Haar vader heeft deze wereld, die lijkt op één groot laboratorium, zelf gemaakt.
| Production | Toshio Suzuki | Producer |
| Art | Noboru Yoshida | Art Direction |
| Directing | Hayao Miyazaki | Director |
| Editing | Takeshi Seyama | Editor |
| Camera | Atsushi Okui | Director of Photography |
| Production | Koji Hoshino | Executive Producer |
| Writing | Hayao Miyazaki | Writer |
| Sound | Joe Hisaishi | Original Music Composer |
| Art | Kazuo Oga | Background Designer |
| Visual Effects | Michiyo Yasuda | Color Designer |
| Art | Yoji Takeshige | Background Designer |
| Visual Effects | Katsuya Kondo | Animation Director |
| Visual Effects | Atsuko Tanaka | Key Animation |
| Visual Effects | Kenichi Yamada | Key Animation |
| Visual Effects | Hideaki Yoshio | Key Animation |
| Visual Effects | Eiji Yamamori | Key Animation |
| Visual Effects | Kazuyoshi Onoda | Key Animation |
| Visual Effects | Mariko Matsuo | Key Animation |
| Visual Effects | Shougo Furuya | Key Animation |
| Visual Effects | Makiko Suzuki | Key Animation |
| Production | Seiji Okuda | Production Manager |
| Visual Effects | Atsushi Tamura | Key Animation |
| Visual Effects | Hiromasa Yonebayashi | Key Animation |
| Visual Effects | Masafumi Yokota | Key Animation |
| Production | Ryoichi Fukuyama | Production Manager |
| Visual Effects | Masako Sato | Key Animation |
| Production | Naoya Fujimaki | Production Manager |
| Visual Effects | Shunsuke Hirota | Key Animation |
| Visual Effects | Makiko Futaki | Key Animation |
| Visual Effects | Shinji Otsuka | Key Animation |
| Visual Effects | Hideki Hamasu | Key Animation |
| Visual Effects | Kenichi Konishi | Key Animation |
| Visual Effects | Sachiko Sugino | Key Animation |
| Visual Effects | Hiroko Minowa | Key Animation |
| Visual Effects | Nobuyuki Takeuchi | Key Animation |
| Visual Effects | Hiroomi Yamakawa | Key Animation |
| Visual Effects | Takashi Hashimoto | Key Animation |
| Visual Effects | Takeshi Honda | Key Animation |
| Art | Ryoko Ina | Background Designer |
| Visual Effects | Fumie Konno | Key Animation |
| Art | Sayaka Hirahara | Background Designer |
| Art | Yoshikazu Fukutome | Background Designer |
| Art | Masako Nagata | Background Designer |
| Art | Youichi Watanabe | Background Designer |
| Art | Kikuyo Yano | Background Designer |
| Art | Yoichi Nishikawa | Background Designer |
| Art | Osamu Masuyama | Background Designer |
| Visual Effects | Junji Yabuta | Compositing Artist |
| Visual Effects | Tsutomu Awata | Key Animation |
| Visual Effects | Atsushi Tamura | Compositing Artist |
| Visual Effects | Yuichiro Sueyoshi | Key Animation |
| Art | Naoya Tanaka | Assistant Art Director |
| Art | Naomi Kasugai | Assistant Art Director |
| Art | Takashi Omori | Assistant Art Director |
| Art | Mitsuo Yoshino | Background Designer |
| Art | Yohei Takamatsu | Background Designer |
| Art | Shiho Sato | Background Designer |
| Visual Effects | Hidenori Shibahara | Compositing Artist |
| Visual Effects | Norihiko Miyoshi | Compositing Artist |
| Visual Effects | Miki Sato | Compositing Artist |
| Sound | Koji Kasamatsu | Sound Effects |
| Editing | Rie Matsubara | Assistant Editor |
| Editing | Keiko Kadokawa | Assistant Editor |
| Editing | Hiromi Sasaki | Assistant Editor |
| Sound | Mika Yamaguchi | Foley Artist |
| Sound | Shuji Inoue | Sound Mixer |
| Sound | Eriko Kimura | Sound Director |
| Art | Eiko Matsushima | Painter |
| Writing | Hayao Miyazaki | Original Story |
| Art | Yoshimi Shibata | Painter |
