Surname จุลทรัพย์ (จุลทรัพย์ 
, Chunlasap ) , across the world, is a very rare family name. The cognomen จุลทรัพย์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Also, จุลทรัพย์ is the forename as well as the last name.