Osowo was formerly part of the German Empire. In the German Empire, the place was called Wespen.
The place is now called Osowo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Ossowo | German Empire | Konitz | before the Versailles Treaty |
| Osowo | Poland | Chojnice | after the Versailles Treaty |
| Wespen | German Empire | Konitz | 1939 |
| Osowo | Poland | Chojnice | 1945 |
| Osowo | Poland | Gdańsk | 1992 |