Cognomen นิลรุ่งรัตนา (นิลรุ่งรัตนา, Nilrungratana 
) , globally, is an extremely rare family name. The surname นิลรุ่งรัตนา is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Nilrungratana | Thailand |