Osowiec was formerly part of the German Empire. In the German Empire, the place was called Oßwitz.
The place is now called Osowiec and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Ossowitz | German Empire | Bromberg | before the Versailles Treaty |
| Osowiec | Poland | Bydgoszcz | after the Versailles Treaty |
| Oßwitz | German Empire | Bromberg | 1939 |
| Osówiec | Poland | Bydgoszcz | 1945 |
| Osowiec | Poland | Bydgoszcz | 1992 |