Łącznik was formerly part of the German Empire. In the German Empire, the place was called Wiesengrund O.S..
The place is now called Łącznik and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Lonschnik | German Empire | Neustadt O.S. | 1936 |
| Wiesengrund O.S. | German Empire | Neustadt O.S. | 1939 |
| Łącznik | Under Polish administration | Prudnik | 1945 |
| Łącznik | Poland | Opole | 1992 |