Žár was formerly part of the German Empire. In the German Empire, the place was called Sohors bei Gratzen.
The place is now called Žár and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Sohors | Austro-Hungary | Kaplitz | before the Treaty of Saint-Germain |
| Žár | Austro-Hungary | Kaplitz | before the Treaty of Saint-Germain |
| Žár | Czechoslovakia | Kaplice | after the Treaty of Saint-Germain |
| Sohors | Czechoslovakia | Kaplice | after the Treaty of Saint-Germain |
| Sohors bei Gratzen | German Empire | Gmünd | 1938 |
| Žár | Czechoslovakia | Trhové Sviny | 1945 |
| Žár | Czechoslovakia | České Budějovice | 1992 |
| Žár | Czech Republic | České Budějovice | 1993 |