Радон

佐原健二

Shigeru Kawamura

白川由美

Kiyo

平田昭彦

Professor Kyuichiro Kashiwagi

山田巳之助

Mining Chief Osaki

田島 義文

Izeki

緒方燐作

Goro

馬野都留子

Osumi

榊田敬二

Tahei

中谷一郎

Senkichi

村上冬樹

Professor Minami (uncredited)

熊谷卓三

Policeman Tashiro (uncredited)

堤康久

Imamura, F-86F pilot (uncredited)

手塚 勝巳

Rodan / Meganulon / Hotel Manager

中島春雄

Rodan / Meganulon

広瀬正一

Meganulon / Fighter pilot

中田康子

Female Honeymooner (uncredited)

平凡太郎

Laborer (uncredited)

勝本圭一郎

Coal mine employee (uncredited)

岡部正

Journalist (uncredited)

山本廉

Soldier in jeep (uncredited)

小堀阿吉雄

Police Chief Nishimura

津田光男

Staff Officer Takeuchi

今泉廉

Sunagawa

向井淳一郎

Military officer