Cognomen Poomtinwer (Poomtinwer 
) , all around the world, is a very rare surname. The surname Poomtinwer is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Poomtinwer | Thailand |
Tharapong, and Tharapongphom