Radzyń was formerly part of the German Empire. In the German Empire, the place was called Rehden.
The place is now called Radzyń Chełmiński and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Rehden (Westpr.) | German Empire | Graudenz | before the Versailles Treaty |
| Radzyń | Poland | Grudziądz | after the Versailles Treaty |
| Rehden | German Empire | Graudenz | 1939 |
| Radzyń Chełmiński | Poland | Wąbrzeźno | 1945 |
| Radzyń Chełmiński | Poland | Toruń | 1992 |