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