Akira Takarada as Ichiro "Ichi" Sakai

Yuriko Hoshi as Junko Nakanishi

Hiroshi Koizumi as Professor Shunsuke Miura

Yū Fujiki as Jiro Nakamura

Kenji Sahara as Jiro Torahata

Emi Ito as Shobijin (Twin Fairy)

Yumi Ito as Shobijin (Twin Fairy)

Jun Tazaki as Editor Maruta

Yoshibumi Tajima as Kumayama

Kenzō Tabu as Prefectural Assembly Member

Yutaka Sada as School Principal

Akira Tani as Amimoto, Shizunora Village Leader

Susumu Fujita as Head of JSDF Task Force

Ikio Sawamura as Shinto Priest

Ren Yamamoto as Sailor at the Dock

Kōzō Nomura as JSDF Member

Yasuhisa Tsutsumi as Police Officer at the Dock

Yoshio Kosugi as Infant Island Chief

Shin Ōtomo as Police Chief

Senkichi Ōmura as Shizunoura Fisherman

Miki Yashiro as Ms. Kobayashi

Wataru Ōmae as Happy Enterprises Employee

Kôji Uno as Shizunoura Fisherman

Yutaka Nakayama as Shizunoura Fisherman

Toshihiko Furuta as Soldier

Hideo Shibuya as Journalist

Tadashi Okabe as JSDF Member

Seishirō Kuno as JSDF Member

Terumi Oka as Hamakaze Hotel Waitress

Shirō Tsuchiya as Shizunoura Fisherman

Takuzō Kumagai as Shizunoura Fisherman

Yukihiko Gondō as Happy Enterprises Employee

Kôichi Satô as Happy Enterprises Employee

Haruya Sakamoto as JSDF Member

Ikuo Kawamura as Transport Aircraft Pilot

Rinsaku Ogata as Transport Aircraft Operations Assistant

Haruo Suzuki as JSDF Correspondent

Katsumi Tezuka as Godzilla

Haruo Nakajima as Godzilla

Robert Dunham as US Navy Soldier (uncredited)