Cognomen รัตน์หิรัญกร (รัตน์หิรัญกร 
) , in the entire world, is a very rare surname. The surname รัตน์หิรัญกร is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| รัตน์หิรัญกร | Thailand |