Surname รัตนอมรธัญ (รัตนอมรธัญ 
) , all around the world, is an extremely rare family name. The family name รัตนอมรธัญ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| รัตนอมรธัญ | Thailand |