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