Cognomen เขมวรรณ (เขมวรรณ 
, Khemmawan , Kemawan ) , all over the world, is a very rare family name. The last name เขมวรรณ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, เขมวรรณ is the forename as well as the last name.