Janiszowice was formerly part of the German Empire. In the German Empire, the place was called Jähnsdorf.
The place is now called Janiszowice and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Jähnsdorf | German Empire | Sorau (Lausitz) | 1939 |
| Janiszowice | Under Polish administration | Żary | 1945 |
| Janiszowice | Poland | Zielona Góra | 1992 |