 | Akira Takarada als Ichiro "Ichi" Sakai |
 | Yuriko Hoshi als Junko Nakanishi |
 | Hiroshi Koizumi als Prof. Miura |
 | Yū Fujiki als Jiro Nakamura |
 | Kenji Sahara als Jiro Torahata |
 | Emi Ito als Shobijin (Twin Fairy) |
 | Yumi Ito als Shobijin (Twin Fairy) |
 | Jun Tazaki als Editor Maruta |
 | Yoshifumi Tajima als Kumayama |
 | Kenzō Tabu als Prefectural Assembly Member (uncredited) |
 | Yutaka Sada als School Principal (uncredited) |
 | Akira Tani als Village Leader |
 | Susumu Fujita als Head of JSDF Task Force (uncredited) |
 | Ikio Sawamura als Shinto Priest |
 | Ren Yamamoto als Sailor at the Dock (uncredited) |
 | Yoshio Kosugi als Infant Island Chief (uncredited) |
 | Kōzō Nomura als JSDF Member (uncredited) |
 | Yasuhisa Tsutsumi als Police Officer at the Dock (uncredited) |
 | Shin Ōtomo als Police Chief (uncredited) |
 | Senkichi Ōmura als Shizunoura Fisherman (uncredited) |
 | Miki Yashiro als Ms. Kobayashi |
 | Wataru Ōmae als Happy Enterprises Employee (uncredited) |
| Kôji Uno als Shizunoura Fisherman (uncredited) |
 | Yutaka Nakayama als Shizunoura Fisherman (uncredited) |
| Toshihiko Furuta als Soldier (uncredited) |
 | Hideo Shibuya als Journalist (uncredited) |
 | Tadashi Okabe als JSDF Member (uncredited) |
| Seishirō Kuno als JSDF Member (uncredited) |
| Terumi Oka als Hamakaze Hotel Waitress (uncredited) |
| Shirō Tsuchiya als Shizunoura Fisherman (uncredited) |
| Takuzō Kumagai als Shizunoura Fisherman (uncredited) |
| Yukihiko Gondô als Happy Enterprises Employee (uncredited) |
| Kôichi Satô als Happy Enterprises Employee (uncredited) |
| Ikuo Kawamura als Transport Aircraft Pilot (uncredited) |
 | Rinsaku Ogata als Transport Aircraft Operations Assistant (uncredited) |
| Haruo Suzuki als JSDF Correspondent (uncredited) |
| Haruya Sakamoto als JSDF Member (uncredited) |
 | Haruo Nakajima als Godzilla (uncredited) |
 | Katsumi Tezuka als Godzilla (assistant) |
 | Robert Dunham als US Navy Soldier (uncredited) |
| Ishirō Honda | Director |
| Sanezumi Fujimoto | Executive Producer |
| Hajime Koizumi | Director of Photography |
| Akira Ifukube | Original Music Composer |
| Takeo Kita | Production Design |
| Boku Morimoto | Production Manager |
| Eiji Tsuburaya | Special Effects |
| Ryôhei Fujii | Editor |
| Eiji Tsuburaya | Visual Effects |
| Shinichi Sekizawa | Screenplay |
| Kôji Kajita | Assistant Director |
| Seishichi Kojima | Lighting Technician |
| Sadamasa Nishimoto | Sound Effects |
| Tomoyuki Tanaka | Executive Producer |
| Tadashi Koike | Production Manager |
| Fumio Yanoguchi | Sound Recordist |
| Takeo Kita | Art Direction |
| Sadamasa Arikawa | Special Effects |
| Mototaka Tomioka | Special Effects |
| Yôichi Manoda | Special Effects |
| Hisashi Shimonaga | Sound |
