Cognomen ศิริวรรณเพ็ญ (ศิริวรรณเพ็ญ 
, Siriwanpen ) , across the world, is a very rare family name. The surname ศิริวรรณเพ็ญ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, ศิริวรรณเพ็ญ is the forename as well as the last name.