Cognomen Gert-Rainer (Gert-Rainer 
) , throughout the world, is an extremely rare surname. Much more prevalently, Gert-Rainer is the forename as well as the last name. Parts of the name also exists independently as a first name Gert, and a first name Rainer.
| VARIANT | COUNTRY |
|---|---|
| Gert-Rainer | Germany |