Cognomen รัตน์นิภา (รัตน์นิภา 
) , in all the world, is an extremely rare family name. The last name รัตน์นิภา is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, รัตน์นิภา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| รัตน์นิภา | Thailand |