Ostroróg was formerly part of the German Empire. In the German Empire, the place was called Scharfenort.
The place is now called Ostroróg and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Scharfenort | German Empire | Samter | before the Versailles Treaty |
| Ostroróg | Poland | Szamotuly | after the Versailles Treaty |
| Scharfenort | German Empire | Samter | 1939 |
| Ostroróg | Poland | Szamotuly | 1945 |
| Ostroróg | Poland | Poznań | 1992 |