石神社, Shinto shrine in Japan

Ishigami Jinja is a small Shinto shrine in Futamatao, Ome City, situated quietly among trees and natural surroundings. The modest main hall features a sacred round stone at its center believed to hold divine spirit, accompanied by a large ginkgo tree and smaller subsidiary shrines throughout the grounds.

The shrine's founding date is unknown; tradition says it was divided from Ishigami Jingu in Nara Prefecture. During the Edo period it served as the tutelary shrine of Futamatao village in Tama District, Musashi Province. The round stone worshipped as the shrine body and a sacred mirror kept here are both recorded in the shrine's tradition.

The shrine's festival, held on the second Sunday of October, features the Futamatao lion dance (shishimai). The ginkgo in the grounds is a subject of nyū-shinkō, a cult of breast-feeding: its bark is boiled and drunk in the belief that it promotes lactation. The deity is Iwanagahime no Mikoto, and a sacred mirror is said to be kept here.

The shrine stands at 1-199 Futamatao, Ome, a short walk from JR Ome Line's Ishigamimae Station. The grounds are compact and the paths unpaved in places, so watch for roots and uneven ground near the ginkgo. The annual festival falls on the second Sunday of October.

Women seeking to breastfeed or become pregnant visit the ginkgo tree to touch its bark and request blessings, a practice passed down through generations. The tree was designated a natural monument by Ome City in 1957 and remains a symbol of hope for the community.