Lejsek was formerly part of the German Empire. In the German Empire, the place was called Lýsky.
The place is now called Lýsky and belongs to Czechoslovakia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Lejsek | Austro-Hungary | Prerau | before the Treaty of Saint-Germain |
| Lejsky | Austro-Hungary | Prerau | before the Treaty of Saint-Germain |
| Lísky | Austro-Hungary | Prerau | before the Treaty of Saint-Germain |
| Lýsky | Czechoslovakia | Přerov | after the Treaty of Saint-Germain |
| Leisek | German Empire | Prerau | 1939 |
| Lýsky | German Empire | Prerau | 1939 |
| Lýsky | Czechoslovakia | Přerov | 1945 |
| Lýsky | Czechoslovakia | Severní Morava | 1992 |