Last name Phanavanh (Phanavanh 
) , around the world, is a rare cognomen. The last name Phanavanh is characteristic of Laos, where it is quite a rare surname, and the United States, where it is an extremely rare surname. Very seldom, Phanavanh is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phanavanh | Laos, United States |