Łomnica was formerly part of the German Empire. In the German Empire, the place was called Lomnitz (Kr. Grätz, Wartheland).
The place is now called Łomnica and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Lomnitz (Bz. Posen) | German Empire | Meseritz | before the Versailles Treaty |
| Łomnica | Poland | Nowy Tomyśl | after the Versailles Treaty |
| Lomnitz | German Empire | Grätz (Wartheland) | 1939 |
| Lomnitz (Kr. Grätz, Wartheland) | German Empire | Grätz (Wartheland) | 1939 |
| Łomnica | Poland | Nowy Tomyśl | 1945 |
| Łomnica | Poland | Zielona Góra | 1992 |