Surname พิลวัฒน์ (พิลวัฒน์ 
, Pinlawat ) , worldwide, is an extremely rare family name. The family name พิลวัฒน์ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, พิลวัฒน์ is the forename as well as the last name.