Łubna was formerly part of the German Empire. In the German Empire, the place was called Lubben.
The place is now called Łubna and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Lubna | German Empire | Konitz | before the Versailles Treaty |
| Łubna | Poland | Chojnice | after the Versailles Treaty |
| Lubben | German Empire | Konitz | 1939 |
| Łubna | Poland | Chojnice | 1945 |
| Łubna | Poland | Bydgoszcz | 1992 |