Willer-sur-Thur was formerly part of the German Empire. In the German Empire, the place was called Weiler.
The place is now called Willer-sur-Thur and belongs to France.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Weiler (Kr. Thann) | German Empire | Thann | before the Versailles Treaty |
| Willer | France | Haut-Rhin | after the Versailles Treaty |
| Weiler | German Empire | Tann | 1940 |
| Willer-sur-Thur | France | Haut-Rhin | 1945 |
| Willer-sur-Thur | France | Haut-Rhin | 1993 |