Cognomen อุบลวัฒน์ (Ubonwat 
, อุบลวัฒน์ , Auboonwat ) , across the world, is a rare family name. The last name อุบลวัฒน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, อุบลวัฒน์ is the forename as well as the last name.