Planá was formerly part of the German Empire. In the German Empire, the place was called Plan.
The place is now called Planá and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Plan | Austro-Hungary | Plan | before the Treaty of Saint-Germain |
| Planá | Austro-Hungary | Plan | before the Treaty of Saint-Germain |
| Planá | Czechoslovakia | Planá | after the Treaty of Saint-Germain |
| Plan | Czechoslovakia | Planá | after the Treaty of Saint-Germain |
| Plan | German Empire | Tachau | 1938 |
| Planá | Czechoslovakia | Mariánské Lázně | 1945 |
| Planá | Czechoslovakia | Tachov | 1992 |
| Planá | Czech Republic | Tachov | 1993 |