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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.