Cognomen Kumbuatong (Kumbuatong 
) , all over the world, is a very rare family name. The surname Kumbuatong is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kumbuatong | Thailand |
Niphon, Korapin, Plapplueng, Tanaporn, and Pornrapat