Lask was formerly part of the German Empire. In the German Empire, the place was called Lask.
The place is now called Łask and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Lask | Russian Empire | Lask | 1914 |
| Łask | Poland | Łask | 1921 |
| Łask | German Empire | Lask | 1939 |
| Lask | German Empire | Lask | 1939 |
| Łask | Poland | Łask | 1945 |
| Łask | Poland | Sieradz | 1992 |