Last name Gajduk (Gajduk 
, Гайдук 
) , in the world, is a common cognomen. The surname Gajduk is characteristic of Eastern Europe, particularly Belarus, where it is quite a common surname, Ukraine, and Russia, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Gajduk | Poland, Belarus, Germany, Croatia, North Macedonia |
| Гайдук | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
|
viktor petrovič gajduk Russian political scientist and literary critic, RU (b. 1944) |
|