Family name Sounivanh (Sounivanh 
) , all over the world, is a very rare surname. The family name Sounivanh is habitual in South-eastern Asia, particularly Laos, where it is a rare surname, and Thailand, where it is a very rare surname. Very seldom, Sounivanh is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sounivanh | Laos, United States, Thailand |