Inamura-jinja, Shinto shrine in Japan

Inamura-jinja is a Shinto shrine in Tenjinbayashi, Hitachiota, Ibaraki Prefecture. It enshrines Nigihayahi-no-Mikoto, ancestor of the Mononobe clan, and eleven deities of the seven generations of the Age of the Gods. The shrine stands at the foot of the Bontenzan burial mounds, and its grounds include a hall rebuilt in 1693 after Tokugawa Mitsukuni ordered the seven mounds of the 'Shichidai Tenjin' to be combined into one sanctuary.

The shrine was likely established during the Heian period and has remained a place of worship for the local community for hundreds of years. It gained recognition as a Shikinai Ronsha and was ranked as a Junior Fifth Rank shrine until the ranking system was reformed in 1946 following the Shinto Directive.

The shrine's name changed from 'Shichidai Tenjin-gū' to Inamura-jinja in the Meiji era, when it was identified with the Engishiki-listed shrine. The grounds hold a torii with a plaque reading 'Shichidai Tenjin-gū', donated by Tokugawa Mitsukuni, and the shrine treasures a set of sacred mirrors. The deity Nigihayahi is the ancestor of the Mononobe clan.

Inamura-jinja stands at 3228 Tenjinbayashi-machi, Hitachiota, in Ibaraki Prefecture, on the site where Tokugawa Mitsukuni had the hall built in 1693. The shrine grounds lie southwest of the Bontenzan burial mounds, whose main tumulus is the second largest in Ibaraki Prefecture. Nearby are Sata-ji temple and the Bontenzan kofun group, so the shrine can be combined with them on foot.

The shrine's grounds hold a lesser-known link to the Kuji no Kuni no Miyatsuko: tradition names Funase no Sukune, third-generation descendant of Ikagashikoo no Mikoto, as the first Kuji no Kuni no Miyatsuko, appointed under Emperor Seimu, and says he enshrined Nigihayahi here. Southwest of the shrine lie the Bontenyama kofun, whose main mound is said to be his tomb.