Lažaný was formerly part of the German Empire. In the German Empire, the place was called Lažany.
The place is now called Lažany and belongs to Czechoslovakia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Lažan | Austro-Hungary | Turnau | before the Treaty of Saint-Germain |
| Lažany | Austro-Hungary | Turnau | before the Treaty of Saint-Germain |
| Lažaný | Czechoslovakia | Turnov | after the Treaty of Saint-Germain |
| Laschan | German Empire | Turnau | 1939 |
| Lažany | German Empire | Turnau | 1939 |
| Lažany | Czechoslovakia | Turnov | 1945 |
| Lažany | Czechoslovakia | Východní Čechy | 1992 |