Leonów was formerly part of the German Empire. In the German Empire, the place was called Lehnen.
The place is now called Leonów and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Leonowo | German Empire | Koschmin | before the Versailles Treaty |
| Leonów | Poland | Krotoszyn | after the Versailles Treaty |
| Lehnen | German Empire | Gostingen | 1939 |
| Leonów | Poland | Gostyń | 1945 |
| Leonów | Poland | Leszno | 1992 |