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. 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.