Jasień was formerly part of the German Empire. In the German Empire, the place was called Gassen.
The place is now called Jasień and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Gassen | German Empire | Sorau (Lausitz) | 1939 |
| Jasień | Under Polish administration | Żary | 1945 |
| Jasień | Poland | Zielona Góra | 1992 |