Dębniak was formerly part of the German Empire. In the German Empire, the place was called Eichenwalde.
The place is now called Dębniak and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Eichenwalde | German Empire | Johannisburg | 1939 |
| Dębniak | Under Polish administration | Pisz | 1945 |
| Dębniak | Poland | Suwałki | 1992 |