Family name Vanthavong (Vanthavong 
) , in the entire world, is a very rare cognomen. The surname Vanthavong is habitual in Australia, where it is a very rare surname, France, where it is an extremely rare surname, and Canada. Measured by absolute frequency, it is the most numerous in the United States, Australia, and France.
| VARIANT | COUNTRY |
|---|---|
| Vanthavong | Canada, France, United States, Australia |