- Akira Takarada
- Ichiro Sakai
- Yuriko Hoshi
- Junko Nakanishi
- Hiroshi Koizumi
- Professor Miura
- Yû Fujiki
- Jiro Nakamura
- Kenji Sahara
- Jiro Torahata
- Emi Itô
- Shobijin (Twin Fairy)
- Yumi Itô
- Shobijin (Twin Fairy)
- Yoshifumi Tajima
- Kumayama
- Jun Tazaki
- Murata, Newspaper Editor
- Kenzô Tabu
- Mayor
- Yoshio Kosugi
- Chief of Infant Island
- Akira Tani
- Village Headman
- Susumu Fujita
- JSDF General
- Yutaka Sada
- School Principal
- Ikio Sawamura
- Priest
- Ren Yamamoto
- Sailor
- Kôzô Nomura
- Soldier
- Yasuhisa Tsutsumi
- Police Officer
- Mitsuo Tsuda
- Self Defense Force Officer
- Shin Ãtomo
- Police Officer
- Senkichi Ãmura
- Villager
- Miki Yashiro
- Schoolteacher
- Wataru Ãmae
- Islander
- Shirô Tsuchiya
- Fisherman
- Kôji Uno
- Villager
- Yutaka Nakayama
- Islander
- Toshihiko Furuta
- Soldier
- Hideo Shibuya
- Journalist
- Kôichi Satô
- Happy Kogyosha Employee
- Hiroshi Akitsu
- Fisherman
- Tadashi Okabe
- Soldier
- Haruya Sakamoto
- Defense Force Member
- Seishirô Kuno
- Aide
- Katsumi Tezuka
- Mothra
- Haruo Nakajima
- Gojira
- Bin Furuya
- Police Officer
- Hans Horneff
- Press Official
- Ralph Jesser
- U.S. Army Officer
- Yoshio Katsube
- Fisherman of Shizunoura / Front Desk Clerk of Hamakazi Hotel / Firefighter at pier
- Keiichirô Katsumoto
- Infanto islander / Passer-by in Nagoya
- Shigeo Katô
- Native islander
- Eisaburo Komatsu
- Self Defense Force Member
- Akio Kusama
- Defense Force Executive, aborigine
- Keiji Sakakida
- Native Islander / Nagoya Passer-by
- Junnosuke Suda
- Military Official
- Masaaki Tachibana
- Kuratahama Polder Man / Self-Defense Forces Member / Hotel Guest Evacuee
- Kamayuki Tsubono
- Aboriginal / Fleeing hotel guest
- Sôji Ubukata
- Morning Newspaper Employee
- Harold Conway
- Weapon's Expert on US Ship
- Robert Dunham
- US Navy Soldier
- Kazuo Hinata
- Prefectural Assembly Secretary / Morning Newspaper Reporter (uncredited)
- Osman Yusuf
- Missile Surveyor on US Ship
