Sedlec was formerly part of the German Empire. In the German Empire, the place was called Selz.
The place is now called Sedlec and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Selz | Austro-Hungary | Leitmeritz | before the Treaty of Saint-Germain |
| Sedlec | Austro-Hungary | Leitmeritz | before the Treaty of Saint-Germain |
| Sedlec | Czechoslovakia | Litoměřice | after the Treaty of Saint-Germain |
| Selz | Czechoslovakia | Litoměřice | after the Treaty of Saint-Germain |
| Selz | German Empire | Leitmeritz | 1938 |
| Sedlec | Czechoslovakia | Litoměřice | 1945 |
| Sedlec | Czechoslovakia | Litoměřice | 1992 |
| Sedlec | Czech Republic | Litoměřice | 1993 |