Duschnik was formerly part of the German Empire. In the German Empire, the place was called Dušníky nad Vltavou.
The place is now called Dušníky nad Vltavou and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Duschnik | Austro-Hungary | Schlan | before the Treaty of Saint-Germain |
| Dušníky | Austro-Hungary | Schlan | before the Treaty of Saint-Germain |
| Dušníky nad Vltavou | Czechoslovakia | Kralupy nad Vltavou | after the Treaty of Saint-Germain |
| Duschnik an der Moldau | German Empire | Kralup an der Moldau | 1939 |
| Dušníky nad Vltavou | German Empire | Kralup an der Moldau | 1939 |
| Dušníky nad Vltavou | Czechoslovakia | Kralupy nad Vltavou | 1945 |
| Dušníky nad Vltavou | Czechoslovakia | Mělník | 1992 |
| Dušníky nad Vltavou | Czech Republic | Mělník | 1993 |