Cognomen พงษ์ไพ (พงษ์ไพ 
, Pongbhai , Plongpai ) , in all the world, is a very rare surname. The last name พงษ์ไพ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, พงษ์ไพ is the forename as well as the last name.