Cognomen บุญสว่าง (บุญสว่าง, Boonsavang 
, Boonswang 
) , worldwide, is a rare family name. The family name บุญสว่าง is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Boonsavang, Boonsawaeng | Thailand |
| Boonswang | United States, Thailand |
Boonsawang, Boonsaweang, Boonsawnng, Bounsavaeng, Bunsavang, Bunsawang, and Bunsawanng