Louny was formerly part of the German Empire. In the German Empire, the place was called Louny.
The place is now called Louny and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Laun | Austro-Hungary | Laun | before the Treaty of Saint-Germain |
| Louny | Austro-Hungary | Laun | before the Treaty of Saint-Germain |
| Louny | Czechoslovakia | Louny | after the Treaty of Saint-Germain |
| Laun | German Empire | Laun | 1939 |
| Louny | German Empire | Laun | 1939 |
| Louny | Czechoslovakia | Louny | 1945 |
| Louny | Czechoslovakia | Louny | 1992 |
| Louny | Czech Republic | Louny | 1993 |