Cognomen Khamhoung (Khamhoung 
) , in the entire world, is quite a rare family name. The cognomen Khamhoung is characteristic of Laos, where it is quite a common surname, and the United States, where it is an extremely rare surname. Also, Khamhoung is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khamhoung | Thailand, Laos, United States |