| Futago-ji 両子寺 | |
| Location: | Kunisaki, Ōita |
| Religious Affiliation: | Tendai |
| Country: | Japan |
| Founded By: | Ninmon |
| Year Completed: | 718 |
is a Tendai Buddhist temple in Kunisaki, Ōita Prefecture, Japan. It is located on the slopes of Mount Futago (両子山, Futagosan), the highest mountain on the Kunisaki Peninsula. The temple is said to have been established in 718 by Ninmon (仁聞), a legendary monk, and became the central temple of the Rokugō Manzan (六郷満山) temples.[1] The Rokugō Manzan culture is said to be the origin of Shinbutsu-shūgō, or the syncretism of Buddhism and Shinto. As such, both Shinto and Buddhist elements can be seen at Futago-ji.[2] .[3] thumb|Torii, typically seen at Shinto shrines, at Futago-ji. This is indicative of the temple's history of being influenced by both Shinto and Buddhist elements.
The temple precincts are a Prefectural Historic Site included within a Special Zone of the Setonaikai National Park.[1] [4] [5]