Trněný Újezd was formerly part of the German Empire. In the German Empire, the place was called Trněný Újezd.
The place is now called Trněný Újezd and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Trno-Oujezd | Austro-Hungary | Hořowitz | before the Treaty of Saint-Germain |
| Trno Újezd | Austro-Hungary | Hořowitz | before the Treaty of Saint-Germain |
| Trněný Újezd | Austro-Hungary | Hořowitz | before the Treaty of Saint-Germain |
| Trněný Újezd | Czechoslovakia | Hořovice | after the Treaty of Saint-Germain |
| Dorn-Aujest | German Empire | Beraun | 1939 |
| Trněný Újezd | German Empire | Beraun | 1939 |
| Trněný Újezd | Czechoslovakia | Beroun | 1945 |
| Trněný Újezd | Czechoslovakia | Beroun | 1992 |
| Trněný Újezd | Czech Republic | Beroun | 1993 |