Surname รัตนญา (รัตนญา 
) , all over the world, is a very rare family name. The family name รัตนญา is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, รัตนญา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| รัตนญา | Thailand |