Koječín was formerly part of the German Empire. In the German Empire, the place was called Koječín.
The place is now called Koječín and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Koječin | Austro-Hungary | Pisek | before the Treaty of Saint-Germain |
| Koječín | Austro-Hungary | Pisek | before the Treaty of Saint-Germain |
| Koječín | Czechoslovakia | Písek | after the Treaty of Saint-Germain |
| Kojetschin | German Empire | Pisek | 1939 |
| Koječín | German Empire | Pisek | 1939 |
| Koječín | Czechoslovakia | Prachatice | 1945 |
| Koječín | Czechoslovakia | Strakonice | 1992 |
| Koječín | Czech Republic | Strakonice | 1993 |