Cognomen แก้วถาวร (แก้วถาวร, Kaewtavorn 
, Keawthaworn 
) , around the world, is a very rare surname. The surname แก้วถาวร is habitual in Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kaewtavorn | United States |
| Keawtaworn, Keawthaworn | Thailand |
Kaeothawa, Kaeothawon, Kaeothaworn, Kaewtaworn, Kaewthavon, Kaewthavor, Kaewthavorn, Kaewthavornk, Kaewthawaywises, Kaewthawon, Kaewthaworn, Keawthavon, and Keawthavorn