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All around the world, ต้นข้าว (Tonkao , Tonkhao , ต้นข้าว) is a very rare epicene forename. The given name ต้นข้าว is habitual in South-eastern Asia, particularly Thailand, where it is a very rare gender-neutral name. Likewise, ต้นข้าว is the last name as well as the forename.