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