Smolnice was formerly part of the German Empire. In the German Empire, the place was called Smolnice.
The place is now called Smolnice and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Smolnitz | Austro-Hungary | Laun | before the Treaty of Saint-Germain |
| Smolnice | Austro-Hungary | Laun | before the Treaty of Saint-Germain |
| Smolnice | Czechoslovakia | Louny | after the Treaty of Saint-Germain |
| Smolnitz | German Empire | Laun | 1939 |
| Smolnice | German Empire | Laun | 1939 |
| Smolnice | Czechoslovakia | Louny | 1945 |
| Smolnice | Czechoslovakia | Louny | 1992 |
| Smolnice | Czech Republic | Louny | 1993 |