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Throughout the world, Buan (Buan , บัน , บวน ) is a rare epicene forename. The first name Buan is characteristic of South-eastern Asia, particularly Thailand, where it is a rare epicene name, Indonesia, where it is a very rare male name, and Philippines, where it is a very rare gender-neutral name. In absolute terms, it most frequently occurs in Thailand, Indonesia, and India. More prevalently, Buan is the last name as well as the forename.