- HD 1080
- Runtime: 86m.
- Status: Released
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- Languages: ja
- Country: Japan
- Director: Noriaki Yuasa
- Stars: Kōjirō Hongō, Kichijirō Ueda, Reiko Kasahara, Naoyuki Abe, Taro Marui
- keywords: japan, monster, cave, giant monster, bat, turtle, sequel, scientist, kaiju, gamera (giant turtle), road construction
- Production_studio: Daiei Film
- Slogan: Giant Monster Dogfight
- providers: Amazon Prime Video, Screambox Amazon Channel, ARROW, Midnight Pulp, Amazon Prime Video with Ads
- The Gamera vs. Gyaos is featured in the top rankings of 1967
- #11 in Top Adventure Movies of 1967
- #19 in Top Action Movies of 1967
- #10 in Top Horror Movies of 1967
Unusual volcanic activity in Japan awakens Gyaos, a bloodthirsty flying monster with the power to slice things in half with an ultrasonic ray. While scientists and the military scramble to devise a way to stop this new threat, a young boy forms an alliance with Gamera; a monster no one else seems to trust.