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