Cognomen Khamhoy (Khamhoy 
) , throughout the world, is an extremely rare surname. The family name Khamhoy is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, Khamhoy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khamhoy | Thailand, United States |