Łęczno was formerly part of the German Empire. In the German Empire, the place was called Weidenfeld.
The place is now called Łęczno and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Lentschen | German Empire | Meseritz | before the Versailles Treaty |
| Łęczno | Poland | Nowy Tomyśl | after the Versailles Treaty |
| Weidenfeld | German Empire | Grätz (Wartheland) | 1939 |
| Łęczno | Poland | Nowy Tomyśl | 1945 |
| Łęczno | Poland | Gorzów | 1992 |