Family name รัตนเรขา (รัตนเรขา 
) , worldwide, is an extremely rare last name. The last name รัตนเรขา is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, รัตนเรขา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| รัตนเรขา | Thailand |