Cognomen อรุณศิริ (อรุณศิริ 
, Arunsiri 
, Aroonsiri ) , all over the world, is a rare last name. The cognomen อรุณศิริ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Likewise, อรุณศิริ is the forename as well as the last name.