Cognomen โรจน์สุวรรณ (โรจน์สุวรรณ 
, Rotsuwan ) , around the world, is a very rare surname. The cognomen โรจน์สุวรรณ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, โรจน์สุวรรณ is the forename as well as the last name.