Family name Hadadak (Hadadak 
) , in all the world, is a very rare cognomen. The last name Hadadak is habitual in Malaysia, where it is a rare surname, and India, where it is an extremely rare surname. Very seldom, Hadadak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hadadak | Malaysia, India |
Haslina, Hasliza, Mohd Khalil, Muhamadkhalil, Muhamad Khalil, and Muhammad Khalil