Hoki Province (伯耆国, Hōki-no kuni) was an old province of Japan in the area that is today the western part of Tottori Prefecture. It was sometimes called Hakushū (伯州). Hōki bordered on Inaba, Mimasaka, Bitchū, Bingo, and Izumo Provinces.
The ancient capital was in the area that is now Kurayoshi, and a major castle town was at Yonago.
Maps of Japan and Hōki Province were reformed in the 1870s when the prefecture system was introduced. At the same time, the province continued to exist for some purposes. For example, Hōki is explicitly recognized in treaties in 1894 (a) between Japan and the United States and (b) between Japan and the United Kingdom.