Cognomen ถาวรวุฒิ (ถาวรวุฒิ 
, Thawornwut ) , globally, is a very rare surname. The last name ถาวรวุฒิ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, ถาวรวุฒิ is the forename as well as the last name.