Cognomen Khongsavanh (Khongsavanh 
) , in the entire world, is a very rare last name. The last name Khongsavanh is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Much less frequently, Khongsavanh is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khongsavanh | United States |