Cognomen Khambunyo (Khambunyo 
) , across the world, is an extremely rare surname. The last name Khambunyo is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Khambunyo | Thailand |
Chawiwan, Khemmika, Thiratchaya, and Nanthawan