Cognomen ถาวรรุ่งรัตน์ (ถาวรรุ่งรัตน์, Thavornrungrat 
) , around the globe, is an extremely rare last name. The cognomen ถาวรรุ่งรัตน์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Thavornrungrat | Thailand |