Cognomen Souliyavongsa (Souliyavongsa 
) , in the world, is a rare family name. The family name Souliyavongsa is characteristic of South-eastern Asia, particularly Laos, where it is quite a rare surname, and Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Souliyavongsa | Laos, Thailand |