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