Okamiyama Shrine in Tottori Prefecture is composed of the back shrine in Daisen-cho and the main shrine in Odaka, Yonago City. The enshrined deities are Onamuchi-no-kami (the back shrine) and Onamuji-no-kami (the main shrine). It is the 9th shrine of Izumokoku Shinbutsu Reijo (Holy Places of Shinto and Buddhism in Izumo Province).

The shrine was originally built in the mountain of Daisen to enshrine the deity residing in this mountain. It is said that Emperor Go-Daigo, who had escaped from Oki Island, offered a prayer for defeating the Kamakura Shogunate at this shrine in 1333. As it was impossible to perform rituals during the winter, the shrine for winter rituals was built at the foot of the mountain, which became the present main shrine.

The shrine building is in Gongen-zukuri style with 50 m long front corridor. It is nationally designated as an Important Cultural Property. The shrine is believed to have the divine power to bring safety and eliminate evils. In June, the mountain opening festival is held at this shrine, where 2,000 people with torches in their hands parade down the mountain.