Dębniak was formerly part of the German Empire. In the German Empire, the place was called Debniak.
The place is now called Dębniak and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Debniak | Russian Empire | Sohačev | 1914 |
| Dębniak | Poland | Sochaczew | 1919 |
| Debniak | German Empire | Plöhnen | 1939 |
| Dębniak | Poland | Nowy Dwór Mazowiecki | 1945 |
| Dębniak | Poland | Warszawa | 1992 |