Hajek was formerly part of the German Empire. In the German Empire, the place was called Hájek.
The place is now called Hájek (Praha-Hájek) and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Hajek | Austro-Hungary | Žižkow | before the Treaty of Saint-Germain |
| Hájek | Austro-Hungary | Žižkow | before the Treaty of Saint-Germain |
| Hájek | Czechoslovakia | Říčany | after the Treaty of Saint-Germain |
| Hajek | German Empire | Ritschan | 1939 |
| Hájek | German Empire | Ritschan | 1939 |
| Hájek | Czechoslovakia | Říčany | 1945 |
| Hájek (Praha-Hájek) | Czechoslovakia | Praha, Hlavní město | 1992 |
| Hájek (Praha-Hájek) | Czech Republic | Praha-město | 1993 |