List of Japanese voice actors is a list who characters voiced in Japanese.
A
- Akemi Okamura - Fio Piccolo
- Aki Asakura - Kaguya
- Akihiro Miwa - Moro and Witch of the Waste
- Akiko Yano - Ponyo's Sisters
B
- Bunta Sugawara - Kamajī and Ged
I
- Ikue Otani - Girl A
K
- Ken Yasuda - Radish Spirit, Soldier and Tōichi
M
- Miina Tominaga - Lastelle
R
- Rumi Hiiragi - Chihiro Ogino, Young Mother and Sachiko Hirokōji
- Ryūnosuke Kamiki - Boh, Markl and Sho
Laputa: Castle in the Skyr
- Keiko Yokozawa - Sheeta (Princess Lusheeta Toel Ul Laputa)
- Kotoe Hatsui - Captain Dola
- Minori Terada - Colonel Muska
- Fujio Tokita - Uncle Pom
- Ichiro Nagai - General Mōro
- Hiroshi Ito - Boss/Mr. Duffi
- Takumi Kamiyama - Shalulu/Charles
- Yoshito Yasuhara - Lui/Louis
- Sukekiyo Kameyama - Anli/Henri
- Ryuji Saikachi - Motoro/Engineer
- Machiko Washio - Okami
- Tarako - Madge