Surname โรจนรัตน์อรรถ (โรจนรัตน์อรรถ 
) , in all the world, is an extremely rare family name. The family name โรจนรัตน์อรรถ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| โรจนรัตน์อรรถ | Thailand |