Cognomen โรจนาวรรณ (Rojanawan 
, โรจนาวรรณ ) , all over the world, is a very rare family name. The last name โรจนาวรรณ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, โรจนาวรรณ is the forename as well as the last name.