Rudnik was formerly part of the German Empire. In the German Empire, the place was called Rudnik.
The place is now called Rudnik and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Rudnik | Austro-Hungary | Freistadt/Frysztat, Fryštát | before the Treaty of Saint-Germain |
| Rudnik | Poland | Cieszyn | after the Treaty of Saint-Germain |
| Rudnik | German Empire | Teschen | 1939 |
| Rudnik | Poland | Cieszyn | 1945 |
| Rudnik | Poland | Bielsko | 1992 |