Cognomen Ouemphancharoen (Ouemphancharoen 
) , across the world, is a very rare family name. The family name Ouemphancharoen is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ouemphancharoen | Thailand |
Pramode, Parichat, Prabhanidhi, Phonlawat, Nawakanok, and Phraeophan