Cognomen Khunchun (Khunchun 
) , in the world, is a very rare surname. The surname Khunchun is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, Khunchun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khunchun | India, Thailand |
Thammarat, and Woottichai