Tadao Takashima as Osamu Sakurai

Kenji Sahara as Kazuo Fujita

Yū Fujiki as Kinzaburo Furue

Ichirō Arishima as Director Tako

Jun Tazaki as General Masami Shinzo

Akihiko Hirata as Dr. Shigezawa

Mie Hama as Fumiko Sakurai

Akiko Wakabayashi as Tamiye

Akemi Negishi as Chikiro's Mother

Yoshio Kosugi as Farou Island Chief

Yoshifumi Tajima as Yukichi Yamamoto captain of the Shinsei-Maru No. 2

Ikio Sawamura as Witch Doctor

Someshō Matsumoto as Dr. Onuki

Kō Mishima as Official

Sachio Sakai as Obayashi

Tatsuo Matsumura as Dr. Makino

Senkichi Ōmura as TTV Translator Konno

Senshô Matsumoto as Prime Minister

Ren Yamamoto as Commander of Operation Burial

Haruya Katō as Obayashi's assistant

Shin Ōtomo as Captain of Vessel

Nadao Kirino as General's Aide

Yasuhisa Tsutsumi as General's Aide #2

Kenzō Tabu as Dreary Newscaster

Takuzō Kumagai as Police Executive

Hideo Shibuya as Member of Press Corp

Douglas Fein as Captain of Seahawk

Harold Conway as Scientist in Seahawk

Osman Yusuf as Submariner

Shōichi Hirose as King Kong

Haruo Nakajima as Godzilla

Katsumi Tezuka as Godzilla in Iceberg

Clifford Harrington as