Olszyny was formerly part of the German Empire. In the German Empire, the place was called Ellerneck.
The place is now called Olszyny and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Olszini | German Empire | Konitz | before the Versailles Treaty |
| Olszyny | Poland | Chojnice | after the Versailles Treaty |
| Ellerneck | German Empire | Konitz | 1939 |
| Olszyny | Poland | Chojnice | 1945 |
| Olszyny | Poland | Bydgoszcz | 1992 |