Piasutno was formerly part of the German Empire. In the German Empire, the place was called Seenwalde.
The place is now called Piasutno and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Piassutten | German Empire | Ortelsburg | 1938 |
| Seenwalde | German Empire | Ortelsburg | 1939 |
| Piasutno | Under Polish administration | Szczytno | 1945 |
| Piasutno | Poland | Olsztyn | 1992 |