Last name Khamtia (Khamtia 
) , throughout the world, is an extremely rare surname. The cognomen Khamtia is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more prevalently, Khamtia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khamtia | Laos, Thailand |