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