Throughout the world, Gerd-Detlef (Gerd-Detlef 
) is a very rare male forename. The given name Gerd-Detlef is habitual in Western Europe, particularly Germany, where it is a very rare masculine name. Parts of the name also exists independently as a first name Gerd, and a first name Detlef.
| VARIANT | COUNTRY |
|---|---|
| Gerd-Detlef | Germany |