Nison-in (二尊院 Nison-in?) is a Tendai Buddhist temple complex in Ukyō-ku, a western ward in the city of Kyoto, Japan. The temple's official name is Ogura-yama Nison-kyō-in Keidai-ji (小倉山 二尊教院 華台寺 Ogura-yama Nison-kyō-in Keidai-ji?). The temple is a popular destination during the Japanese maple viewing season (the momiji season).
The temple derives its name from the fact that there are two main images here—one statue of the founding Buddha and another statue of one who has reached enlightenment; or in short, Nison refers to these "two revered images." Both of these Heian period Buddhist statues are designated as Important Cultural Properties of Japan.
The name Nison-in derives from the temple's two principal image, Shaka Nyorai (called the "Gautama Buddha of Hakken" who sends out world's new- borns), and Amitabha Tathagata (called the "Amitabha of Raigei" who greets those who've died).
Nison-in was founded in the early Heian period. Emperor Saga initiated the establishment of the temple in 834; and today it is part of the Enryaku-ji temple group. None of the original structures survived destruction during the Onin War (1467–1477).