Hikawa-tenman-jinja, Shinto shrine in Japan

Hikawa-tenman-jinja is a Shinto shrine in the Kano district of Okegawa, entered by two approaches: a southern path linked to the Tenjin-dō from Nakasendō, and an eastern path with guardian lion-dog statues. The grounds hold the main hall, a kagura hall, an amulet office and a water basin, plus swings, a slide and horizontal bars where children play.

Founded by tradition in 869 (Jōgan 11), the shrine was long known as Kano Tenmangū, guardian of Kano village. In 1868, when upper and lower Kano merged, the village's Hikawa Shrine was combined with it, producing the unusual name Hikawa Tenman. In the Edo period it appeared in a guide to the Kiso Road, and travellers on the Nakasendō left Okegawa宿 by the Tenjin-dō to pray here.

The shrine is dedicated to Sugawara no Michizane, an ancient scholar honored as the god of learning and wisdom. Visitors leave small paper wishes called ema attached to nearby racks, filling the grounds with personal hopes and prayers for academic success.

The shrine has two approaches: the south one links to the Tenjin-dō, the old road from Okegawa-juku, while the east approach, with its komainu guardian dogs, feels more like a proper shrine path. The grounds also hold a kagura hall, a certificate office, a water basin and children's play equipment. The old well once used for medicinal water no longer functions and now holds carp.

The well in the grounds once supplied water for a medicinal brew credited with curing many illnesses, which travellers on the Nakasendō came to drink; it no longer functions and now holds carp, so it can be taken for a pond. It is said to be very deep.