Surname Khamlak (Khamlak 
, Хамлак 
) , all over the world, is a rare family name. The surname Khamlak is habitual in Ukraine, where it is a rare surname, Kazakhstan, where it is a very rare surname, and Thailand. Measured by absolute frequency, it is commonest in Ukraine, Russia, and Thailand. Much less frequently, Khamlak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khamlak | India, Thailand |
| Хамлак | Ukraine, Russia, Kazakhstan |