Unieszynko was formerly part of the German Empire. In the German Empire, the place was called Wunneschin, Klein.
The place is now called Unieszynko and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Wunneschin, Klein | German Empire | Lauenburg i.Pom. | 1939 |
| Unieszynko | Under Polish administration | Lębork | 1945 |
| Unieszynko | Poland | Słupsk | 1992 |