Family name Khounphonh (Khounphonh 
) , around the world, is a very rare cognomen. The cognomen Khounphonh is characteristic of Laos, where it is quite a rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Khounphonh is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khounphonh | Laos, United States |