Tasumo Hatanaka
Tadao Takashima
Makoto Jinguji
Yōko Fujiyama
Defense Commander
Susumu Fujita
Government Official
Minoru Takada
Shindo
Hisaya Ito
Taxi Driver
Ikio Sawamura
Empress of Mu
Tetsuko Kobayashi
Rimako - Sneezing Model
Akemi Kita
Liuetenant Fuji
Hiroshi Hasegawa
Kidnapped Scientist
Nadao Kirino
Shin Ōtomo
Sergeant Yamada
Haruya Sakamoto
Yoshito Nishibe
Yū Fujiki
Warship Captain
Tetsu Nakamura
Sailor
Yutaka Nakayama
Defense Agency Executive B
Mitsuo Tsuda
Police Officer
Kôji Uno
Memoko - Girl in Susumu's studio
Sadako Amemiya
Rinsaku Ogata
Hideo Ôtsuka
Man of Bus
Yutaka Oka
Military Henchman
Yukihiko Gondô
Mu Henchman
Shōichi Hirose
Uto Omino
Kenji Sahara
Katsumi Tezuka
(as Jirô Kumagai)
Takuzō Kumagai
Mu Henchman Beside High Priest of Mu
Yasuzō Ogawa
Senior Officer
Shirō Tsuchiya
Wataru Ōmae
Mu Submarine Crewman
Osman Yusuf
Toshio Miura
Masayoshi Kawabe
Hiroshi Akitsu
Hideo Shibuya
Admiral Kosumi
Ken Uehara
Keisuke Yamada
Shinjirô Hirota
Keisuke Yamaji
Kuniyoshi Kashima
Detective Ito (voice)
Hal Archer
One of Mu Imperials
Sanjay Mamohan Berry
JSDF member
Bin Furuya
Defense Agency Executive
Kazuo Hinata
Sergeant Goten Kenbutai
Eisaburo Komatsu
Todoroki Takashi, Ken Taketai officersI
Akio Kusama
Inspector
Hiroshi Koizumi
Mt. Mihara Climber
Keiji Sakakida
Kamayuki Tsubono
Minor Role (uncredited)
Enver Altenbay
One of Mu Imperials (uncredited)
Ralph Jesser
Mu Empire man / Self Defense Forces exec
Haruo Nakajima
Jinguji / High Priest (voice) (uncredited)
Ted Thomas
Captain Hachiro Jinguji
Jun Tazaki
Tome 'Amano' Amanoshome
Yoshifumi Tajima
Mu Agent #23
Akihiko Hirata
High Priest of Mu
Hideyo Amamoto
Screenplay
Shinichi Sekizawa
Producer
Tomoyuki Tanaka
Original Music Composer
Akira Ifukube
Director
Ishirō Honda
Special Effects Coordinator
Eiji Tsuburaya
Novel
Shigeru Komatsuzaki
Shunro Oshikawa
Director of Photography
Hajime Koizumi
Editor
Ryôhei Fujii
Production Design
Takeo Kita