Cognomen รัตนกรณ์ (รัตนกรณ์ 
) , worldwide, is a very rare family name. The family name รัตนกรณ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, รัตนกรณ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| รัตนกรณ์ | Thailand |