Last name พลทรัพย์ (พลทรัพย์ 
, Pholsap , Pholsup ) , in the world, is a rare cognomen. The cognomen พลทรัพย์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, พลทรัพย์ is the forename as well as the last name.