Cognomen รัตน์สุวรรณ (รัตน์สุวรรณ 
) , in the world, is a very rare surname. The family name รัตน์สุวรรณ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, รัตน์สุวรรณ is the forename as well as the last name.