Akira Yamanouchi as Dr. Yano

Toshie Kimura as Toshie Yano

Hiroyuki Kawase as Ken Yano

Keiko Mari as Miki Fujiyama

Toshio Shiba as Yukio Keuchi

Yukihiko Gondō as Mean General

Eisaburo Komatsu as Fisherman

Tadashi Okabe as Scientist

Wataru Ōmae as Helpless Police Officer

Susumu Okabe as Interviewer

Haruo Nakajima as Godzilla

Kenpachirō Satsuma as Hedorah

Yoshio Yoshida as Gohei - fisherman

Haruo Suzuki as JSDF Officer

Yoshio Katsube as JSDF Engineer

Kentaro Watanabe as Announcer B

Takuya Yuki as Correspondent

Tatsuhito Go as Youth