Osieczki was formerly part of the German Empire. In the German Empire, the place was called Neu Wusseken.
The place is now called Osieczki and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Neu Wusseken | German Empire | Schlawe i.Pom. | 1939 |
| Osieczki | Under Polish administration | Sławno | 1945 |
| Osieczki | Poland | Słupsk | 1992 |