Family name รัตนแก้ว (Rattanakaew 
, รัตนแก้ว, Ratanakaew ) , all around the world, is a rare surname. The last name รัตนแก้ว is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Rattanakaew | United States, Thailand |
| Ratanaklaew, Ratanakaew | Thailand |
Ranatkaeo, Ratanakaeo, Ratanakeaw, Ratnakaew, Rattanakeawl, Rattanakew, Rattanakhiao, Ratthanakaew, and Ruttanakaew