Cognomen คุณสุวรรณ (คุณสุวรรณ 
, Youtsuwan ) , in all the world, is a rare family name. The surname คุณสุวรรณ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, คุณสุวรรณ is the forename as well as the last name.