Tarnów Jeziorny was formerly part of the German Empire. In the German Empire, the place was called Tarnau.
The place is now called Tarnów Jeziorny and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Polnisch Tarnau | German Empire | Glogau | 1914 |
| Tarnau am See | German Empire | Glogau | 1937 |
| Tarnau | German Empire | Glogau | 1939 |
| Tarnów Jeziorny | Under Polish administration | Głogów | 1945 |
| Tarnów Jeziorny | Poland | Zielona Góra | 1992 |