Kozlov was formerly part of the German Empire. In the German Empire, the place was called Koßlau.
The place is now called Kozlov and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kosslau | Austro-Hungary | Luditz | before the Treaty of Saint-Germain |
| Kozlov | Austro-Hungary | Luditz | before the Treaty of Saint-Germain |
| Kozlov | Czechoslovakia | Žlutice | after the Treaty of Saint-Germain |
| Koßlau | Czechoslovakia | Žlutice | after the Treaty of Saint-Germain |
| Koßlau | German Empire | Luditz | 1938 |
| Kozlov | Czechoslovakia | Toužim | 1945 |
| Kozlov | Czechoslovakia | Karlovy Vary | 1992 |
| Kozlov | Czech Republic | Karlovy Vary | 1993 |