Last name กุลวุฒิ (กุลวุฒิ 
, Kullawut , Kunlawut ) , all over the world, is a rare family name. The cognomen กุลวุฒิ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Likewise, กุลวุฒิ is the forename as well as the last name.