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