Wosek was formerly part of the German Empire. In the German Empire, the place was called Osek.
The place is now called Osek and belongs to Czechoslovakia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Wosek | Austro-Hungary | Poděbrad | before the Treaty of Saint-Germain |
| Osek | Austro-Hungary | Poděbrad | before the Treaty of Saint-Germain |
| Osek | Czechoslovakia | Poděbrady | after the Treaty of Saint-Germain |
| Wosek | German Empire | Podiebrad | 1939 |
| Osek | German Empire | Podiebrad | 1939 |
| Osek | Czechoslovakia | Poděbrady | 1945 |
| Osek | Czechoslovakia | Střední Čechy | 1992 |