Johannisdorf was formerly part of the German Empire. In the German Empire, the place was called Johannisdorf.
The place is now called Janowo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Johannisdorf | German Empire | Marienwerder | before the Versailles Treaty |
| Janowo | Poland | Gniew | after the Versailles Treaty |
| Johannisdorf | German Empire | Dirschau | 1939 |
| Johannisdorf | German Empire | Marienwerder | 1939 |
| Janowo | Poland | Kwidzyn | 1945 |
| Janowo | Poland | Elbląg | 1992 |