Ludom (Bz. Posen) was formerly part of the German Empire. In the German Empire, the place was called Lüdden.
The place is now called Ludomy and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Ludom (Bz. Posen) | German Empire | Obornik/Obernick | before the Versailles Treaty |
| Ludomy | Poland | Oborniki | after the Versailles Treaty |
| Ludom | German Empire | Obernick | 1939 |
| Luden | German Empire | Obernick | 1939 |
| Lüdden | German Empire | Obernick | 1939 |
| Ludomy | Poland | Oborniki | 1945 |
| Ludomy | Poland | Piła | 1992 |