Family name Sombounkhanh (Sombounkhanh 
) , throughout the world, is a rare last name. The last name Sombounkhanh is characteristic of Laos, where it is quite a common surname, France, where it is a very rare surname, and Canada, where it is an extremely rare surname. Not in comparison with a country's population, this name is the most popular in Laos, France, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Sombounkhanh | Laos, France, Canada, United States |