Cognomen Oupalavanh (Oupalavanh 
) , in all the world, is a rare family name. The last name Oupalavanh is habitual in South-eastern Asia, particularly Laos, where it is quite a rare surname. Also, Oupalavanh is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oupalavanh | Laos, United States |