Cognomen ฮัค (Hak 
, ฮัค 
) , all over the world, is a widespread last name. The cognomen ฮัค is habitual in India, where it is quite a common surname, Brunei, and Qatar. In absolute terms, it most frequently occurs in India, Algeria, and Saudi Arabia. Very seldom, ฮัค is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hak | India, Indonesia, Malaysia, Saudi Arabia, Algeria |
| ฮัค | Thailand |