Cognomen รัตนพุทธคุณ (รัตนพุทธคุณ 
) , in the world, is an extremely rare family name. The last name รัตนพุทธคุณ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| รัตนพุทธคุณ | Thailand |