Loučná was formerly part of the German Empire. In the German Empire, the place was called Waizengrün.
The place is now called Loučná and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Waitzengrün | Austro-Hungary | Graslitz | before the Treaty of Saint-Germain |
| Waizengrün | Austro-Hungary | Graslitz | before the Treaty of Saint-Germain |
| Waitzengrün | Czechoslovakia | Kraslice | after the Treaty of Saint-Germain |
| Waitzengrün | German Empire | Graslitz | 1938 |
| Waizengrün | German Empire | Graslitz | 1938 |
| Loučná | Czechoslovakia | Kraslice | 1945 |
| Loučná | Czechoslovakia | Sokolov | 1992 |
| Loučná | Czech Republic | Sokolov | 1993 |