Květnová (Ostrov-Květnová) was formerly part of the German Empire. In the German Empire, the place was called Permesgrün.
The place is now called Květnová (Ostrov-Květnová) and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Permesgrün | Austro-Hungary | Sankt Joachimsthal | before the Treaty of Saint-Germain |
| Permesgrün | Czechoslovakia | Jáchymov | after the Treaty of Saint-Germain |
| Permesgrün | German Empire | Sankt Joachimsthal | 1938 |
| Louka | Czechoslovakia | Jáchymov | 1945 |
| Květnová (Ostrov-Květnová) | Czechoslovakia | Karlovy Vary | 1992 |
| Květnová (Ostrov-Květnová) | Czech Republic | Karlovy Vary | 1993 |