Michael Keith

Eric Carter

Harry Holcombe

Dr. Arnold Johnson

James Yagi

Yutaka Omura

Tadao Takashima

Osamu Sakurai

高島忠夫

佐原健二

Kazuo Fujita (as Keji Sahaka)

有島一郎

Mr. Tako (as Ichiro Arishima)

George Takei

Osamu Sakurai (voice) (uncredited)

Les Tremayne

Mr. Tako / Dr. Shigesawa / Dr. Akira Makino / General Masami

Byron Morrow

Newscaster (uncredited)

Mie Hama

Fumiko Sakurai (uncredited)

浜美枝

Akiko Wakabayashi

Tamiye (uncredited)

若林映子

根岸明美

Chikiro's Mother (Dancing Girl) (uncredited)

平田昭彦

Dr. Kenji Shigezawa (uncredited)

藤木悠

Kinzaburo Furue (uncredited)

Jun Tazaki

General Masami Shinzo (uncredited)

田崎潤

Yoshio Kosugi

Chief of Faro Island (uncredited)

小杉義男

Ikio Sawamura

Witch Doctor (uncredited)

沢村いき雄

田武謙三

Dreary Newscaster (uncredited)

Tatsuo Matsumura

Dr. Akira Makino (uncredited)

松村達雄

Victor Millan

Rodrigo Infanta (uncredited)

Douglas Fein

Commander Roberts (uncredited)

Shōichi Hirose

King Kong (uncredited)

広瀬正一

Haruo Nakajima

Godzilla (uncredited)

中島春雄

手塚 勝巳

Godzilla (iceberg scene) (uncredited)

Paul Mason

Misc. Characters (voice) (uncredited)

Bruce Howard

Misc. Characters (voice) (uncredited)

Cliff Harrington

Al (uncredited)