Buchacz was formerly part of the German Empire. In the German Empire, the place was called Buchatz.
The place is now called Buchacz and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Buchatz | German Empire | Tarnowitz | before the Versailles Treaty |
| Buchacz | Poland | Tarnowskie Góry | after the Versailles Treaty |
| Buchatz | German Empire | Beuthen-Tarnowitz | 1939 |
| Buchacz | Poland | Tarnowskie Góry | 1945 |
| Buchacz | Poland | Katowice | 1992 |