Daisen is a town located in Saihaku District, Tottori Prefecture, Japan. As of 31 December 2022, the town had an estimated population of 15,321 in 5630 households and a population density of 81 persons per km2. The total area of the town is 189.83 square kilometres (73.29 sq mi). The town is known for Mount Daisen, the tallest mountain in the Chūgoku Region. The mountain was an early center of Shinto and Buddhist practice, and the town has numerous designated Cultural Properties of Japan.

Tottori Prefecture is a prefecture of Japan located in the Chūgoku region of Honshu. Tottori Prefecture is the least populous prefecture of Japan at 538,525 (2023) and has a geographic area of 3,507.13 square kilometres (1,354.11 sq mi). Tottori Prefecture borders Shimane Prefecture to the west, Hiroshima Prefecture to the southwest, Okayama Prefecture to the south, and Hyōgo Prefecture to the east.