Family name อรัญวัฒน์ (อรัญวัฒน์ 
, Aranwat ) , around the globe, is a very rare cognomen. The family name อรัญวัฒน์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, อรัญวัฒน์ is the forename as well as the last name.