Oki Province (隠岐国, Oki no kuni?) was an island province of Japan in the area of Shimane Prefecture on the island of Honshū. It was sometimes called Onshū or Inshū (隠州?).
The province was the Oki Islands in the Sea of Japan. The islands are near the provinces of Izumo and Hōki.
The capital city of the province was near Saigō.
In 1221, Emperor Go-Toba was exiled to Oki.
In the Meiji period, the provinces of Japan were converted into prefectures. The maps of Japan and Oki Province were reformed in the 1870s.
Mizuwakasu jinja and Yurahime jinja were the chief Shinto shrines (ichinomiya) of Oki. 
Media related to Oki Province at Wikimedia Commons