Cognomen รืนบุญ (รืนบุญ 
) , around the world, is a rare family name. The last name รืนบุญ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, รืนบุญ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| รืนบุญ | Thailand |