Surname Gretsa (Gretsa 
, Греца 
) , around the globe, is a rare cognomen. The cognomen Gretsa is characteristic of Eastern Europe, particularly Ukraine, where it is a rare surname, and Russia, where it is a very rare surname. Very seldom, Gretsa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gretsa | Russia, India |
| Греца | Russia, Ukraine |