Bad Neudorf was formerly part of the German Empire. In the German Empire, the place was called Constantinsbad.
The place is now called Konstantinovy Lázně and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Bad Neudorf | Austro-Hungary | Plan | before the Treaty of Saint-Germain |
| Constantinsbad | Austro-Hungary | Plan | before the Treaty of Saint-Germain |
| Konstantinovy Lázně | Czechoslovakia | Planá | after the Treaty of Saint-Germain |
| Nová Ves Lázně | Czechoslovakia | Planá | after the Treaty of Saint-Germain |
| Konstantinsbad | Czechoslovakia | Planá | after the Treaty of Saint-Germain |
| Konstantinsbad | German Empire | Tepl | 1938 |
| Constantinsbad | German Empire | Tepl | 1938 |
| Konstantinovy Lázně | Czechoslovakia | Stříbro | 1945 |
| Konstantinovy Lázně | Czechoslovakia | Tachov | 1992 |
| Konstantinovy Lázně | Czech Republic | Tachov | 1993 |