Ružkolhotitz was formerly part of the German Empire. In the German Empire, the place was called Růžkovy Lhotice.
The place is now called Růžkovy Lhotice and belongs to Czechoslovakia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Ružkolhotitz | Austro-Hungary | Ledeč | before the Treaty of Saint-Germain |
| Růžkolhotice | Austro-Hungary | Ledeč | before the Treaty of Saint-Germain |
| Růžkova Lhotice | Austro-Hungary | Ledeč | before the Treaty of Saint-Germain |
| Růžkovy Lhotice | Czechoslovakia | Ledeč nad Sázavou | after the Treaty of Saint-Germain |
| Ruschko-Lhotitz | German Empire | Ledetsch an der Sasau | 1939 |
| Růžkovy Lhotice | German Empire | Ledetsch an der Sasau | 1939 |
| Růžkovy Lhotice | Czechoslovakia | Ledeč nad Sázavou | 1945 |
| Růžkovy Lhotice | Czechoslovakia | Střední Čechy | 1992 |