Family name รัตนมงคลเกษม (รัตนมงคลเกษม 
) , globally, is an extremely rare surname. The surname รัตนมงคลเกษม is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| รัตนมงคลเกษม | Thailand |