Haslov was formerly part of the German Empire. In the German Empire, the place was called Haslau.
The place is now called Hazlov and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Haslau | Austro-Hungary | Asch | before the Treaty of Saint-Germain |
| Hazlov | Austro-Hungary | Asch | before the Treaty of Saint-Germain |
| Haslov | Czechoslovakia | Aš | after the Treaty of Saint-Germain |
| Haslau | Czechoslovakia | Aš | after the Treaty of Saint-Germain |
| Haslau | German Empire | Asch | 1938 |
| Hazlov | Czechoslovakia | Aš | 1945 |
| Hazlov | Czechoslovakia | Cheb | 1992 |
| Hazlov | Czech Republic | Cheb | 1993 |