Religion in Thailand is varied. There is no official state religion in the Thai constitution, which guarantees religious freedom for all Thai citizens, though the king is required by law to be Theravada Buddhist.[1] The main religion practiced in Thailand is Buddhism. The large Thai Chinese population also practices Chinese folk religions, including Taoism. Many other people, especially among the Isan ethnic group, practice Tai folk religions. A significant Muslim population, mostly constituted by Thai Malays, is present especially in the southern regions.