Cognomen บุญยะวงศ์ (บุญยะวงศ์ 
, Bunyavong 
) , all around the world, is a rare last name. The last name บุญยะวงศ์ is characteristic of Laos, where it is quite a rare surname, Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| บุญยะวงศ์ | Thailand |
| Bunyavong | United States, Laos, Thailand, Argentina |