Osetno was formerly part of the German Empire. In the German Empire, the place was called Osten.
The place is now called Osetno and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Osten | German Empire | Guhrau | 1939 |
| Osetno | Under Polish administration | Góra | 1945 |
| Osetno | Poland | Leszno | 1992 |