Lašai was formerly part of the German Empire. In the German Empire, the place was called Laschen.
The place is now called Lašai and belongs to Lithuania.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Laschen | German Empire | Heydekrug | before the Versailles Treaty |
| Lašai | Lithuania | Šilutė | after the Versailles Treaty |
| Laschen | German Empire | Heydekrug | 1939 |
| Lašai | Soviet Union | Priekulė/Prekule | 1945 |
| Lašaj | Soviet Union | Priekulė/Prekule | 1945 |
| Lašai | Lithuania | Šilutė | 1992 |