Surname Ulkhak (Ульхак 
, Ulkhak 
) , in the entire world, is a very rare family name. The family name Ulkhak is habitual in Indonesia, where it is a very rare surname, and Russia. Very seldom, Ulkhak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ульхак | Russia |
| Ulkhak | Indonesia |