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