Family name ธนาทรัพย์ (ธนาทรัพย์ 
) , in the entire world, is a very rare last name. The cognomen ธนาทรัพย์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, ธนาทรัพย์ is the forename as well as the last name.