Family name Khamtha (Khamtha 
) , worldwide, is a rare surname. The surname Khamtha is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Likewise, Khamtha is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khamtha | India, Laos, United States, Thailand |