Surname Gamanovich (Gamanovich 
, Гаманович 
) , in the world, is a rare cognomen. The family name Gamanovich is habitual in Eastern Europe, particularly Belarus, where it is quite a rare surname, Ukraine, where it is a rare surname, and Russia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Gamanovich | Belarus, Russia, United States |
| Гаманович | Belarus, Russia, Kazakhstan, Ukraine |