Family name Sophanavong (Sophanavong 
) , in the entire world, is a very rare last name. The last name Sophanavong is characteristic of Northern America, particularly the United States, where it is an extremely rare surname. Very seldom, Sophanavong is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sophanavong | United States |