Radzyn was formerly part of the German Empire. In the German Empire, the place was called Ratzingen.
The place is now called Radzyń and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Radzyn | Russian Empire | Kutno | 1914 |
| Radzyń | Poland | Kutno | 1921 |
| Radzyn | German Empire | Kutno | 1939 |
| Ratzingen | German Empire | Kutno | 1939 |
| Radzyń | Poland | Kutno | 1945 |
| Radzyń | Poland | Konin | 1992 |