106 user 77 critic

Godzilla vs. Hedorah (1971)

Gojira tai Hedora (original title)
An ever evolving alien life-form from the Dark Gaseous Nebula arrives to consume rampant pollution. Spewing mists of sulfuric acid and corrosive sludge, neither humanity or Godzilla may be able to defeat this toxic menace.


Yoshimitsu Banno, Ishirô Honda (uncredited)


Yoshimitsu Banno, Takeshi Kimura (as Kaoru Mabuchi)




Cast overview, first billed only:
Akira Yamanouchi Akira Yamanouchi ... Dr. Toru Yano (as Akira Yamauchi)
Toshie Kimura ... Toshie Yano
Hiroyuki Kawase Hiroyuki Kawase ... Ken Yano
Toshio Shiba ... Yukio Keuchi
Keiko Mari Keiko Mari ... Miki Fujiyama
Yoshio Yoshida ... Gohei - a fisherman
Haruo Suzuki Haruo Suzuki ... JSDF Officer
Yoshio Katsube Yoshio Katsube ... JSDF Engineer
Susumu Okabe Susumu Okabe ... Announcer A
Kentaro Watanabe Kentaro Watanabe ... Announcer B
Wataru Ômae Wataru Ômae ... Police Officer
Tadashi Okabe Tadashi Okabe ... Scientist
Shigeo Katô Shigeo Katô
Takuya Yuki Takuya Yuki ... Correspondent
Eisaburo Komatsu Eisaburo Komatsu ... Non Commissioned Officer


Coming to Earth on a fallen meteorite, The microscopic alien life-form Hedorah feeds on Earth's pollution and grows into a Gigantic, ever Evolving, poisonous Gas and acid-secreting monster. Godzilla, Earth's Defender senses the Threat and Meets ''the Smog Monster'' in a Literal, Battle for Earth's Survival. Written by Thomas ''The Oldschool Hero'' Cianci

Plot Summary | Add Synopsis


Creature of Slime and Sludge Spawned by Pollution's Poison Threatens to Destroy the Earth! See more »

Motion Picture Rating (MPAA)

Rated PG for sci-fi monster violence and brief mild language | See all certifications »

Parents Guide:

View content advisory »

Did You Know?


Hedorah is often assumed to have been born from pollution but the monster is actually a space monster, arriving on earth to feed on pollution. See more »


When Hedorah throws some sludge at Godzilla's eye in the Mt. Fuji scene, it hit's Godzilla right eye, but after Hedorah gets done laughing, Godzilla's left eye is the one that is damaged. See more »


Yukio Keuchi: Oh, you like Godzilla?
Ken Yano: Superman beats them all!
See more »

Crazy Credits

In AIP's American version of the film, the entire cast is mysteriously uncredited. See more »

Alternate Versions

There are two different English versions of this movie. The first is titled "Godzilla vs. Hedorah" and was dubbed by an uncredited Hong Kong company for Toho. It's unedited from the original Japanese film, and notably all songs were left in Japanese. This version, often called an international or export version by fans, went unreleased in the United States until January 1996 when it was first broadcast on the Sci-Fi Channel. It's since become the only version available on DVD and Blu-Ray in the U.S. The second English version is titled "Godzilla vs. The Smog Monster." This version was produced by Salvatore Billitteri for American International Pictures and released in the United States in 1972. Despite an extant English version, AIP opted to have the film re-dubbed in New York at Titan Productions, Inc. The Japanese-language song featured in the Japanese and international version is translated and replaced by an English version, "Save the Earth," written by Guy Hemric and Adryan Russ and sung by Russ. This American version of the movie was removed from circulation in the mid-'90s when Toho regained control of the film from Orion, which had previously purchased the AIP film library. See more »


Featured in Tumbleweeds (1999) See more »


Kaese! Taiyô wo
("Return! The Sun")
Main Title Theme
Music by Riichirô Manabe
Lyrics by Yoshimitsu Banno
Sung by Keiko Mari, the Honey Knights and the Moon Drops
See more »

User Reviews

17 February 2020 | by coconutkungfu-30704See all my reviews

This psychedelic Goji entry features a very formidable opponent in Hedorah and some very memorable trippy imagery. It has an environmental message and is truly unlike any Goji film.

Hedorah has a certain special aura about it, very memorable moments and a great soundtrack that makes this one of the Showa era's finest.

8 Smog Clouds out of 10!

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Frequently Asked Questions

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Release Date:

February 1972 (USA) See more »

Also Known As:

Godzilla vs. Hedorah See more »

Filming Locations:

Mt. Fuji, Japan


Box Office


$250,000 (estimated)
See more on IMDbPro »

Company Credits

Production Co:

Toho Company See more »
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Technical Specs


Sound Mix:




Aspect Ratio:

2.35 : 1
See full technical specs »

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