- HD 1080
- Runtime: 96m.
- Status: Released
- 1
- Languages: ja
- Country: Japan, United States of America
- Director: Ishirō Honda
- Stars: Nick Adams, Akira Takarada, Keiko Sawai, Kumi Mizuno, Jun Tazaki
- keywords: japan, monster, giant monster, sequel, alien, ufo, dinosaur, alien invasion, rodan, kaiju, king ghidorah, godzilla, tokusatsu, coproduction
- Production_studio: TOHO, United Productions of America, Benedict Pictures Corp., Henry G. Saperstein Enterprises Inc., Tokyo Laboratory
- Slogan: The great fierce battle between Godzilla, Rodan, and King Ghidorah that will sway the ruler of the Universe, Planet X!
- providers: Max, Max Amazon Channel, Criterion Channel
- The Invasion of Astro-Monster is featured in the top rankings of 1965
- #8 in Top Action Movies of 1965
Astronauts Glenn and Fuji investigate Planet X and encounter mysterious aliens known as the Xiliens, who ask Earth's people to help save their world from "Monster Zero". In exchange for borrowing Godzilla and Rodan, the Xiliens offer a cure for cancer. As Glenn investigates, he develops a romance with Miss Namikawa and uncovers the Xilien's true intentions.