Iibo Nimasu Amaterasu Shrine, Shinto shrine in Tatsuno, Hyōgo Prefecture, Japan

Iibo Nimasu Amaterasu Shrine stands on a stone-walled terrace on Mount Hiyoshi (Shirasagi-yama) in Tatsuno, Hyogo Prefecture. Its dark timber hall has a curved, overhanging roof with a small triangular gable facing forward, and a lighter wooden veranda with a slatted railing projects below. A stone stairway with a wooden handrail climbs the slope, and a dark stone marker with white characters stands at the foot of the wall.

Founded in 594 on the summit of Mount Hiyama (Shirasagi-yama) during the reign of Empress Suiko, the shrine is listed in the Engishiki as a Myojin Taisha. Its name derives from the old district of Iibo, linked to the word for grain of rice. The shrine was destroyed by fire in 1181 and later moved to its present site on Mount Hiyama in 1471 by Akamatsu Norishige. The main hall burned down in 1945.

The shrine's name comes from the legend of Iibō, meaning "grain," after a divine messenger gave rice seeds to a local elder in 594. The Nukinuke festival on July 14–15, linked to the Somin Shōrai tale, draws parishioners from 3,300 households in Tatsuno. The shrine is one of the three great shrines of Harima, along with Iwa and Watatsumi.

The shrine is easily reached on foot from central Tatsuno or by driving along small local roads, offering convenient access for casual visits. The site operates throughout the year with visitors typically coming in early morning or evening hours, while festival days bring more activity and community gatherings.

The shrine's roof follows the nagare-zukuri design with an asymmetrical overhang on one side, making the building appear to gently lean forward. This architectural style reflects ancient mountain worship practices and was originally designed to be portable and lightweight, a concept still evident in the shrine's current form.