Raymond Burr

Steve Martin

志村喬

Dr. Yamane

河内桃子

Emiko Yamane

宝田明

Ogata

平田昭彦

Dr. Serizawa

堺左千夫

Hagiwara

村上冬樹

Dr. Tabata

山本廉

Seiji

岡部正

Dr. Tabata's Assistant

Frank Iwanaga

Security Officer Tomo Iwanaga

Sammee Tong

Dr. Yamane / Dr. Tabata (voice) (uncredited)

James Hong

Ogata / Dr. Serizawa / Hagiwara (voice) (uncredited)

Mikel Conrad

George Lawrence (uncredited)

Paul Frees

Unidentified Character (voice) (uncredited)

高堂国典

The Old Fisherman (uncredited)

佐原健二

Man on Boat (uncredited)

菅井きん

Ozawa-san (uncredited)

Lee Miller

Man in Line at Airport (uncredited)

中島春雄

Godzilla (uncredited)

手塚勝巳

Godzilla (uncredited)