Kętrzyno was formerly part of the German Empire. In the German Empire, the place was called Kontenau.
The place is now called Kętrzyno and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kantrschin | German Empire | Neustadt i. Westpr. | before the Versailles Treaty |
| Kętrzyno | Poland | Wejherowo | after the Versailles Treaty |
| Kontenau | German Empire | Neustadt (Westpr.) | 1939 |
| Kętrzyno | Poland | Wejherowo | 1945 |
| Kętrzyno | Poland | Gdańsk | 1992 |