Family name Khammat (Khammat 
) , all around the world, is a very rare surname. The cognomen Khammat is habitual in Iraq, where it is a very rare surname, Thailand, and India, where it is an extremely rare surname. Much less frequently, Khammat is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khammat | India, Iraq, United States, Thailand |