Tenporinji, Buddhist temple in Gojō, Japan.

Tenporinji is a Kōyasan Shingon-shū temple in Inukai-chō, Gojō, founded in 816 by Kūkai and named after the Inukai mountain where he is said to have been guided by two dogs. Its main hall (hondō) is an Edo-period building of square plan with a pyramidal copper-sheeted roof, and two small Kasuga-style shrines, Kariha Myōjin and Nyūtsuhime Myōjin, stand on the grounds.

Kūkai founded the temple in 816, the year after a hunter named Minamiyama no Inukai lent him two dogs that led him to Kōyasan. He built it with the local landowner Kawasaki Jinzaemon, who took the name Dōwa and became the first abbot. Renamed Tenporinji under his disciple Gōrin, it became Inukai-san Henjō-in Tenporinji in 853. A fire destroyed most of Kūkai's relics; the main hall was rebuilt in 1505 and again later, and the Myōjin shrines in 1659.

The temple's name comes from the 816 hermitage Henjō-an, renamed Tenporinji when Kūkai's disciple Kōrin became abbot; in 853 it received its full name, Inukai-san Henjō-in Tenporinji. The two Myōjin shrines, Kasuga-style structures from the Muromachi period, honor the hunter Hakuba Myōjin and Niu Tsuhime, deities linked to Kūkai's founding legend.

The main hall (hondō) stands on the grounds, with the two Myōjin shrines behind it and the Daishizuka burial mound at the rear of the kuri (kitchen quarters). The mound is a square tumulus about 12 metres across, marked by a stone pillar dated 1552. Look for the Sueshi ware and horse trappings excavated there in 1941.

Behind the kuri stands the Daishizuka kofun, a square burial mound about 12 metres across. Its stone marker, dated the 21st day of the second month of Tenbun 21 (1552), bears the invocation "Namu Daishi Henjō Kongō" and is considered the oldest confirmed example of this completed formula. Sue ware, horse trappings, a straight sword and a mirror were unearthed here in 1941.