Miwa Shrine, Shinto shrine in Miwa, Nagano, Japan

Miwa Shrine in Nagano stands in the Miwa neighbourhood near Hongō Station. Its entrance is marked by a large dark-wood torii with a black base and a gold-lettered plaque, a straw rope with white zigzag streamers hanging beneath the lintel; a smaller torii stands behind it. Inside the grounds are a three-legged torii and close to a hundred small stone shrines.

The founding date is unknown; the shrine shares its deity and name with Ōmiwa Shrine in Yamato, and the Engishiki records it as Miwa Shrine of Mizuuchi District in Shinano. A legend in the Zenkōji engi tells that Miwa Tokimaru of Yamato stayed here and dedicated the god's body, leaving Ōmiwa without one. First documented in 861, when a rank was granted to Kuninarihime; renamed Miwa in 1774 and rebuilt in 1793.

The shrine's name and deity, Ōmononushi-no-mikoto, match Ōmiwa Shrine in Yamato, and the Engishiki records it as "Miwa Shrine, Mizunochi District, Shinano Province". A legend in the Zenkōji engi says Miwa Tokimaru of Yamato stayed here and dedicated the Ōmiwa deity's body, so that shrine has no shintai. Near the gate stand about 100 small stone shrines, the keidai hyakumasha.

The shrine stands in the Miwa neighbourhood of Nagano, a short walk from Hongō Station on the Nagano Electric Railway Nagano Line. The grounds sit in a residential district close to the city centre, and the stone-paved path passes under the large wooden torii with its straw rope and paper streamers. The seven local districts of Hongō, Ainoki-higashi, Ainoki-nishi, Yokoyama, Yodogahashi, Miwada-machi and Araya take turns carrying out the shrine's rites.

The shrine's festival calendar includes the Toshikoshi-sai on 16 December, when offerings of ceremonial meals are presented to the roughly one hundred small stone shrines packed into the grounds. Seven neighbourhoods — Hongō, Ainoki-higashi, Ainoki-nishi, Yokoyama, Yodogahashi, Miwada-machi and Araya — take part in running the rites.