Last name Khamtun (Khamtun 
) , in all the world, is a very rare cognomen. The cognomen Khamtun is habitual in Thailand, where it is a very rare surname, and India, where it is an extremely rare surname. Very seldom, Khamtun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khamtun | India, Thailand |