Family name ประยูรทรัพย์ (ประยูรทรัพย์ 
, Prayunsap) , throughout the world, is a very rare surname. The family name ประยูรทรัพย์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, ประยูรทรัพย์ is the forename as well as the last name.