Family name Khamsieng (Khamsieng 
) , globally, is a very rare last name. The cognomen Khamsieng is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, Khamsieng is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khamsieng | Thailand, United States |