Cognomen วิทยวุฒิ (วิทยวุฒิ 
, Witthayawut ) , globally, is a very rare last name. The last name วิทยวุฒิ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, วิทยวุฒิ is the forename as well as the last name.