Surname รัตนเปรมใจ (รัตนเปรมใจ 
) , in the world, is an extremely rare cognomen. The family name รัตนเปรมใจ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| รัตนเปรมใจ | Thailand |