Family name ถาวรเจริญทรัพย์ (ถาวรเจริญทรัพย์ 
, Tavonjaroensup, Thawoncharoensup) , throughout the world, is a very rare surname. The surname ถาวรเจริญทรัพย์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.