Forbach was formerly part of the German Empire. In the German Empire, the place was called Forbach.
The place is now called Forbach and belongs to France.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Forbach (Lothr.) | German Empire | Forbach | before the Versailles Treaty |
| Forbach | France | Moselle | after the Versailles Treaty |
| Forbach (Westmark) | German Empire | Sankt Avold | 1940 |
| Forbach | German Empire | Sankt Avold | 1940 |
| Forbach | France | Moselle | 1945 |
| Forbach | France | Moselle | 1993 |