Cognomen Krongkrathok (Krongkrathok 
) , across the world, is an extremely rare last name. The family name Krongkrathok is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Krongkrathok | Thailand |
Nittaya, and Wichiitchai