Raymond Burr
Steve Martin
Acting
Toyoaki Suzuki
Shinkichi (as Tuyoaki Suzuki)
Acting
Frank Iwanaga
Security Officer Tomo Iwanaga (as Frank Iwaiga)
Acting
Akira Takarada
Ogata (as Akiro Takarata)
Acting
Akihiko Hirata
Dr. Serizawa
Acting
Sachio Sakai
Hagiwara
Acting
Takashi Shimura
Dr. Yamane
Acting
Momoko Kôchi
Emiko Yamane (as Momaku Kuchi)
Acting
Fuyuki Murakami
Dr. Tabata (uncredited)
Acting
Ren Yamamoto
Seiji (uncredited)
Acting
Mikel Conrad
George Lawrence (uncredited)
Acting
Toranosuke Ogawa
President of Company (uncredited)
Acting
Tadashi Okabe
Dr. Tabata's Assistant (uncredited)
Acting
Kokuten Kōdō
The Old Fisherman (uncredited)
Acting
Kenji Sahara
Man on Boat (uncredited)
Acting
Haruo Nakajima
Godzilla (uncredited)
Acting
Katsumi Tezuka
Godzilla (uncredited)
Acting
Raymond Royer
Unidentified Character (voice)
Acting
Michel François
Unidentified Character (voice)
Acting
Roland Ménard
Unidentified Character (voice)
Acting
Violette Jean
Unidentified Character (voice)
Acting
René Blancard
Unidentified Character (voice)
Acting
Maurice Favières
Unidentified Character (voice)
Acting
Dominique Rémy
Unidentified Character (voice)
Acting
Gérard Kérise
Unidentified Character (voice)
Acting
Louis Perdoux
Unidentified Character (voice)
Acting
Claude Dupuis
Unidentified Character (voice)
Acting
Eddy Rasimi
Unidentified Character (voice)
Acting