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Surname Sangtian (แสงเทียน , Sangtian ) , across the world, is quite a rare family name. The cognomen Sangtian is characteristic of Thailand, where it is quite a rare surname, New Zealand, where it is a very rare surname, and Philippines, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Thailand, the United States, and India. More frequently, Sangtian is the forename as well as the last name.