真覚寺, Buddhist temple in Hachioji, Japan

Shinkaku-ji is a Shingon-shu Chizan-ha temple on a hillside in Sanda-machi 5-chome, Hachioji, founded in 1234 according to temple tradition. Its main hall was built in 1853 and its bell tower in 1658. The grounds hold a Kannon hall, the Kōsai Shrine moved here from Kōen-ji, and the Shinji Pond, a breeding pond for toads.

Founded in 1234 according to temple tradition, Shinkaku-ji was revived in 1411 when Naganuma Shurinosuke Tadayoshi became its restoration patron and Ryogen established the Kannon hall. A bell tower was built in 1658 and the main hall in 1853. The temple belongs to the Chizan school of Shingon Buddhism and carries the mountain name Joko-san.

The temple grounds hold Kōsai Shrine, moved here from Kōen-ji during the Shōhō and Eien eras (1644–1648). The Shinshō Pond, an Edo-period breeding site, was where thousands of toads from the Kantō region gathered in early spring; their calls were called the "toad battle". The pond and the toads' habitat are now a city-designated historic site.

The temple is at 5-36-10 Sanda-machi, Hachioji, a 15-minute walk from JR Nishi-Hachioji Station or Keio Mejirodai Station. From the south exit of Nishi-Hachioji Station, take the bus bound for Takao Station south exit and get off at Sanda 5-chome, about 2 minutes on foot.

The temple's cemetery is not the only burial-related feature: the pond called Shinjike is a Hachioji-designated historic site because thousands of toads once gathered there each spring from the Kanto region, a spectacle known as the "toad battle". Housing development has made the toads rare today.