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