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