Family name هايدوك (Hajduk 
, Hejduk 
, هايدوك) , across the world, is a common surname. The family name هايدوك is habitual in Eastern Europe, particularly Poland, where it is quite a common surname, Slovakia, and Czechia (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in Poland, Czechia, and the United States. Also, هايدوك is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hajduk | Slovakia, United States, Czechia, Poland, Croatia |
| Hejduk | Slovakia, United States, Czechia, Germany, Poland |