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Last name พิศวัฒน์ (Pissawat , Pisawat , พิศวัฒน์ ) , throughout the world, is an extremely rare cognomen. The last name พิศวัฒน์ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Predominantly, พิศวัฒน์ is the forename as well as the last name.