Cognomen Khwanbutsabong (Khwanbutsabong 
) , in the entire world, is an extremely rare surname. The cognomen Khwanbutsabong is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Khwanbutsabong | Thailand |
Wirat, and Phra Wirat