Hrádek was formerly part of the German Empire. In the German Empire, the place was called Erdberg.
The place is now called Hrádek and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Erdberg | Austro-Hungary | Znaim | before the Treaty of Saint-Germain |
| Hrádek | Austro-Hungary | Znaim | before the Treaty of Saint-Germain |
| Hrádek | Czechoslovakia | Znojmo-venkov | after the Treaty of Saint-Germain |
| Erdberg | Czechoslovakia | Znojmo-venkov | after the Treaty of Saint-Germain |
| Erdberg | German Empire | Znaim | 1938 |
| Hrádek | Czechoslovakia | Mikulov | 1945 |
| Hrádek | Czechoslovakia | Znojmo | 1992 |
| Hrádek | Czech Republic | Znojmo | 1993 |