Osowa Sień Górna was formerly part of the German Empire. In the German Empire, the place was called Röhrsdorf, Ober.
The place is now called Osowa Sień Górna and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Ober-Röhrsdorf | German Empire | Fraustadt | before the Versailles Treaty |
| Ober Röhrsdorf | German Empire | Fraustadt | after the Versailles Treaty |
| Röhrsdorf, Ober | German Empire | Fraustadt | 1939 |
| Osowa Sień Górna | Under Polish administration | Wschowa | 1945 |
| Osowa Sień Górna | Poland | Leszno | 1992 |