Family name สุทธาวรรณ (สุทธาวรรณ 
, Sutthawan , Sudthawan ) , in the world, is a very rare last name. The surname สุทธาวรรณ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, สุทธาวรรณ is the forename as well as the last name.