Mothra

Frankie Sakai

Senichiro 'Sen-chan' Fukuda

Hiroshi Koizumi

Dr. Shin'ichi Chûjô

Kyōko Kagawa

Michi Hanamura

Jerry Itō

Clark Nelson

Ken Uehara

Dr. Harada

Emi Ito

Shobijin (Twin Fairy)

Yumi Ito

Shobijin (Twin Fairy)

Takashi Shimura

News Editor

Akihiro Tayama

Shinji Chûjô

Akihiko Hirata

Doctor

Tetsu Nakamura

Nelson's Henchman

Obel Wyatt

Dr. Roff

Seizaburō Kawazu

General

Yoshibumi Tajima

Military Advisor

Robert Dunham

Rolisican Official

Kenji Sahara

Helicopter Pilot

Yoshio Kosugi

Ship Captain

Ren Yamamoto

Ship Survivor

Haruya Katō

Ship Survivor

Shōichi Hirose

Dam Worker

Hiroshi Takagi

Nelson's Henchman

Yasuhisa Tsutsumi

Woodcutter

Teruko Mita

Rest House Owner's Wife

Kōji Iwamoto

Nelson's Henchman

Mitsuo Tsuda

Surveyor

Masamitsu Tayama

Shinji Chûjô

Toshio Miura

Nelson's Henchman

Tadashi Okabe

Surveyor

Akira Wakamatsu

Nelson's Henchman

Yutaka Nakayama

Radio Communicator

Osman Yusuf

Nelson's Rolisican Henchman

Akira Yamada

Island Worshipper

Kôji Uno

Police Officer

Wataru Ōmae

Official

Toshihiko Furuta

Dam Worker

Keisuke Matsuyama

Shipmate

Takeo Nagashima

Island Dancer

Mitsuo Matsumoto

Police Officer

Hideo Shibuya

Journalist

Kazuo Hinata

Official

Shigeo Katō

Dam Watchman

Rinsaku Ogata

Ship Survivor

Yutaka Oka

Captain of Transport

Kô Hayami

Island Dancer

Hiroyuki Satake

Police officer

Kazuo Imai

Announcer

Hiroshi Akitsu

Nelson's henchman

Akio Kusama

Surveyor

Gorô Sakurai

Member of Task Force

Haruo Nakajima

Mothra

Katsumi Tezuka

Mothra