Surname Gajb (Gajb 
) , throughout the world, is an extremely rare last name. The family name Gajb is habitual in Northern America, particularly Canada, where it is an extremely rare surname. Much more frequently, Gajb is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gajb | Poland, Canada |
| franciszek gajb Polish pianist, PL (b. 1937) |
|