Last name แก้วกาญจนรัตน์ (แก้วกาญจนรัตน์, Kaewkarnjanarat 
) , globally, is an extremely rare cognomen. The last name แก้วกาญจนรัตน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kaewkarnjanarat | Thailand |