Pačín was formerly part of the German Empire. In the German Empire, the place was called Patzin.
The place is now called Pačín and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Patzin | Austro-Hungary | Plan | before the Treaty of Saint-Germain |
| Pačín | Austro-Hungary | Plan | before the Treaty of Saint-Germain |
| Pačín | Czechoslovakia | Planá | after the Treaty of Saint-Germain |
| Patzin | Czechoslovakia | Planá | after the Treaty of Saint-Germain |
| Patzin | German Empire | Tepl | 1938 |
| Pačín | Czechoslovakia | Stříbro | 1945 |
| Pačín | Czechoslovakia | Tachov | 1992 |
| Pačín | Czech Republic | Tachov | 1993 |