Cognomen คงบุญแก้ว (คงบุญแก้ว, Khongbunkaeo 
) , in the world, is an extremely rare last name. The last name คงบุญแก้ว is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Khongbunkaeo | Thailand |