Family name Kaewkhak (Kaewkhak 
) , throughout the world, is an extremely rare cognomen. The family name Kaewkhak is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kaewkhak | Thailand |
Sakkarin, Nichanan, Nanthanon, and Kittithana