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Surname ทิวากรณ์ (Thiwakorn , ทิวากรณ์ , Tiwakon ) , in the world, is an extremely rare cognomen. The last name ทิวากรณ์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Predominantly, ทิวากรณ์ is the forename as well as the last name.