Wilkasy was formerly part of the German Empire. In the German Empire, the place was called Wolfsee.
The place is now called Wilkasy and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Willkassen | German Empire | Lötzen | 1938 |
| Wolfsee | German Empire | Lötzen | 1939 |
| Wilkasy | Under Polish administration | Giżycko | 1945 |
| Wilkasy | Poland | Suwałki | 1992 |