Cognomen Bua-Ngam (Bua-Ngam 
) , globally, is an extremely rare last name. The surname Bua-Ngam is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Parts of the name also exists independently as a last name Bua, and a last name Ngam.
| VARIANT | COUNTRY |
|---|---|
| Bua-Ngam | Thailand |