Biadacz was formerly part of the German Empire. In the German Empire, the place was called Ludwigsdorf.
The place is now called Biadacz and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Ludwigsdorf | German Empire | Kreuzburg O.S. | 1939 |
| Nagodowice | Under Polish administration | Kluczbork | 1945 |
| Biadacz | Poland | Opole | 1992 |