Last name วังชัย (Vangchai 
, Wangchai 
, วังชัย ) , across the world, is a rare cognomen. The family name วังชัย is characteristic of Thailand, where it is a rare surname, New Zealand, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. Likewise, วังชัย is the forename as well as the last name.