Surname ถนอมทรัพย์ (ถนอมทรัพย์ 
, Thanomsab , Thanomsub 
) , in the entire world, is quite a rare family name. The surname ถนอมทรัพย์ is characteristic of Thailand, where it is quite a rare surname, Malaysia, where it is a very rare surname, and the United States, where it is an extremely rare surname. Also, ถนอมทรัพย์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ถนอมทรัพย์, Thanomsab | Thailand |
| Thanomsub | Malaysia, Thailand, United States |
| Tanomsup | United States, Thailand |
Tanhomsab, Tanomsap, Tanomsub, Tanormsub, Thanaomsap, Thanomhup, Thanomsap, Thanomsrap, Thanomsubsin, and Thanormsub