Akira Kubo
Katsuo Yamabe
Jun Tazaki
Dr. Yoshido
Yukiko Kobayashi
Kyoko Manabe
Yoshio Tsuchiya
Dr. Otani
Chōtarō Tōgin
Ogata
Yoshibumi Tajima
General
Kenji Sahara
Commander Nishikawa
Heihachirō Ōkawa
Engineer
Kyôko Ai
Kilaak Queen
Andrew Hughes
Dr. Stevenson
Ikio Sawamura
Old Farmer
Yoshio Katsube
Young Scientist
Hisaya Ito
Major Tada
Yutaka Sada
Police Officer
Hiroshi Okada
Hospital Doctor
Hideo Shibuya
1st Reporter
Nadao Kirino
1st Detective
Yutaka Oka
2nd Detective
Kamayuki Tsubono
3rd Detective
Seishirō Kuno
SY-3 Engineer
Ken'ichirō Maruyama
Moon Base Employee
Kenzo Echigo
SY-3 Engineer
Wataru Ōmae
SY-3 Astronaut
Naoya Kusakawa
SY-3 Astronaut
Kazuo Suzuki
Kilaak Controlled Staffer (uncredited)
Tōru Ibuki
Kilaak Controlled Staffer (uncredited)
Susumu Kurobe
Kilaak Controlled Staffer (uncredited)
Minoru Itō
Kilaak Controlled Staffer (uncredited)
Rinsaku Ogata
1st Officer (uncredited)
Haruya Sakamoto
2nd Officer (uncredited)
Yukihiko Gondō
Soldier (uncredited)
Rei Maki
Kilaak (uncredited)
Masaaki Tachibana
Officer Announcing Monsters' Arrival (uncredited)
Saburô Iketani
News Reader (uncredited)
Atsuko Takahashi
Kilaak (uncredited)
Yoshio Miyata
Kilaak (uncredited)
Ari Segawa
Kilaak (uncredited)
Kyoko Mori
Kilaak (uncredited)
Midori Uchiyama
Kilaak (uncredited)
Wakako Tanabe
Kilaak (uncredited)
Michiko Ishii
Kilaak (uncredited)
Haruo Nakajima
Godzilla / Military Advisor
Hiroshi Sekita
Anguirus
Teruo Nigaki
Rodan
Susumu Utsumi
King Ghidorah
Masao Fukazawa
Minilla