Surname Sounthavong (Sounthavong 
) , around the world, is a rare last name. The family name Sounthavong is habitual in 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. Measured by absolute frequency, it is commonest in Laos, France, and the United States. Much less frequently, Sounthavong is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sounthavong | France, China, United States, Laos, Canada |