Last name Khamchanh (Khamchanh 
) , globally, is a rare surname. The surname Khamchanh is characteristic of Laos, where it is quite a common surname, France, where it is a very rare surname, and the United States, where it is an extremely rare surname. Also, Khamchanh is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khamchanh | Canada, Thailand, France, Laos, United States |