Last name Gerassim (Герасим 
, Gerassim 
) , in all the world, is quite a rare family name. The family name Gerassim is characteristic of Armenia, where it is quite a common surname, Bulgaria, where it is quite a rare surname, and Ukraine. Also, Gerassim is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Герасим | Kazakhstan, Armenia, Russia, Bulgaria, Ukraine |
| Gerassim | United States, Bulgaria |