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Last name ต้นทอง (Tontong , Prontong , ต้นทอง) , across the world, is a rare family name. The last name ต้นทอง is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname, Malaysia, where it is a very rare surname, and Philippines, where it is an extremely rare surname. Likewise, ต้นทอง is the forename as well as the last name.