Family name Ирмак (Irmak 
, Ирмак 
) , all around the world, is a common cognomen. The surname Ирмак is habitual in Turkey, where it is quite a common surname, Switzerland, where it is quite a rare surname, and Austria, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in Turkey, Germany, and Switzerland. Very seldom, Ирмак is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Irmak | Turkey, Germany, Saudi Arabia, Austria, Switzerland |
| Ирмак | Kazakhstan, Russia, Ukraine |