Chōkaisan Ōmonoimi Shrine

Chōkaisan Ōmonoimi Shrine (Japanese: 鳥海山大物忌神社), also known as Chokaisan Ōmonoimi-jinja, is a Shinto shrine on Mount Chokai in Yamagata Prefecture, Japan. The shrine has three parts on different parts of the mountain: Fukura-kuchinomiya and Warabioka-kuchinomiya at the foot of the mountain and easier to access for visitors, and the main shrine – known as Sanchō-Gohonsha – on the mountain's summit. The Shrine is a national historic site.

The shrine is primarily dedicated to Omonoimi no Kami, the unique kami of the shrine, but also worships Toyoukebime and Tsukuyomi-no-Mikoto. Omonoimi no Kami is considered possibly identical to Toyouke-hime who is also worshipped at the Warabioka subshrine. Omonoimi no Kami is primarily associated with industrial growth and is also enshrined in other places in the Tōhoku region, including Chōkai gassan ryōsho-gu.

The shrine directly worships the mountain as a Kannabi. This is a rare practice and the only major shrines that continue the practice of direct Mountain Worship via Kannabi are Ōmiwa Shrine and Suwa-taisha and Kanasana Shrine.

The shrine is the Dewa Province Ichinomiya, or the first ranked shrine of the Dewa Province. It is close to the Three Mountains of Dewa which are also prominent spots of Mountain Worship.

It is similar to Fujisan Hongū Sengen Taisha at Mount Fuji