Cognomen Gizun (Gizun 
, Гизун 
) , globally, is a rare surname. The cognomen Gizun is habitual in Eastern Europe, particularly Belarus, where it is a rare surname, Ukraine, where it is a very rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Gizun | Georgia |
| Гизун | Kazakhstan, Russia, Ukraine, Belarus |