Daisen is a town located in Saihaku District, Tottori Prefecture, Japan. As of June 1, 2016, Daisen had an estimated population of 16,357 and a population density of 86.2 persons per km². The total area is 189.79 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.