Last name รัตน์สมัยสุข (รัตน์สมัยสุข 
) , around the world, is a very rare surname. The cognomen รัตน์สมัยสุข is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| รัตน์สมัยสุข | Thailand |