Kunšach was formerly part of the German Empire. In the German Empire, the place was called Gundschachen.
The place is now abandoned and the area belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Gundschachen | Austro-Hungary | Gmünd | before the Treaty of Saint-Germain |
| Kunšach | Czechoslovakia | Třeboň | after the Treaty of Saint-Germain |
| Gundschachen | German Empire | Gmünd | 1938 |
| Kunšach | Czechoslovakia | Třeboň | 1945 |
| - aufgelassen - | Czechoslovakia | Jindřichův Hradec | 1992 |
| - aufgelassen - | Czech Republic | Jindřichův Hradec | 1993 |