Last name Gert-Dieter (Gert-Dieter 
) , around the world, is an extremely rare cognomen. Much more prevalently, Gert-Dieter 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 Dieter.
| VARIANT | COUNTRY |
|---|---|
| Gert-Dieter | South Africa, Germany |