Błotnik was formerly part of the German Empire. In the German Empire, the place was called Rübenfelde.
The place is now called Błotnik and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Blattnig | German Empire | Groß Wartenberg | 1937 |
| Rübenfelde | German Empire | Groß Wartenberg | 1939 |
| Błotnik | Under Polish administration | Syców | 1945 |
| Błotnik | Poland | Kalisz | 1992 |