Surname Bounthaiyavong (Bounthaiyavong 
) , around the world, is a very rare cognomen. The family name Bounthaiyavong is habitual in South-eastern Asia, particularly Laos, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Bounthaiyavong | Laos |
Mr. Viengsamai, and Viengsamai