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