All around the world, Gretz (Gretz 
) is a very rare feminine first name. The forename Gretz is habitual in South-eastern Asia, particularly Brunei, where it is quite a rare feminine name. Much more frequently, Gretz is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Gretz | Switzerland, France, Belgium, United States, Germany |