Cognomen อรุณทรัพย์ (อรุณทรัพย์ 
, Arunsap ) , all over the world, is a very rare family name. The surname อรุณทรัพย์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Also, อรุณทรัพย์ is the forename as well as the last name.