Cognomen พลอยบุญ (พลอยบุญ 
) , throughout the world, is a very rare family name. The family name พลอยบุญ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, พลอยบุญ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| พลอยบุญ | Thailand |