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