Family name Gunaj (Gunaj 
) , in the entire world, is a common last name. The surname Gunaj is habitual in Azerbaijan, where it is a common surname, North Macedonia, where it is a rare surname, and India, where it is an extremely rare surname. Likewise, Gunaj is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gunaj | India, Azerbaijan, North Macedonia |