Cognomen Vanthanouvong (Vanthanouvong 
) , in the entire world, is a rare family name. The last name Vanthanouvong is characteristic of Laos, where it is quite a common surname, Malaysia, where it is an extremely rare surname, and Canada. Not in comparison with a country's population, it most frequently occurs in Laos, the United States, and Malaysia.
| VARIANT | COUNTRY |
|---|---|
| Vanthanouvong | Malaysia, Laos, Canada, United States |