Cognomen Gereza (Gereza 
) , in the world, is a rare family name. The surname Gereza is habitual in Tanzania, where it is a rare surname, Kenya, and Philippines, where it is a very rare surname. Very seldom, Gereza is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gereza | Kenya, Tanzania, United States, South Africa, Philippines |