Posnowitz was formerly part of the German Empire. In the German Empire, the place was called Einsiedel O.S..
The place is now called Poznowice and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Posnowitz | German Empire | Groß Strehlitz | 1936 |
| Einsiedel O.S. | German Empire | Groß Strehlitz | 1939 |
| Poznowice | Under Polish administration | Strzelce Opolskie | 1945 |
| Poznowice | Poland | Opole | 1992 |