Roudníček was formerly part of the German Empire. In the German Empire, the place was called Roudníček.
The place is now called Roudníček and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Roudniček | Austro-Hungary | Raudnitz | before the Treaty of Saint-Germain |
| Roudníček | Austro-Hungary | Raudnitz | before the Treaty of Saint-Germain |
| Roudníček | Czechoslovakia | Roudnice nad Labem | after the Treaty of Saint-Germain |
| Raudnitschek | German Empire | Raudnitz an der Elbe | 1939 |
| Roudníček | German Empire | Raudnitz an der Elbe | 1939 |
| Roudníček | Czechoslovakia | Roudnice nad Labem | 1945 |
| Roudníček | Czechoslovakia | Litoměřice | 1992 |
| Roudníček | Czech Republic | Litoměřice | 1993 |