Hammern was formerly part of the German Empire. In the German Empire, the place was called Hammern.
The place is now abandoned and the area belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Hammern | Austro-Hungary | Klattau | before the Treaty of Saint-Germain |
| Hamry | Austro-Hungary | Klattau | before the Treaty of Saint-Germain |
| Hamry | Czechoslovakia | Klatovy | after the Treaty of Saint-Germain |
| Hammern | Czechoslovakia | Klatovy | after the Treaty of Saint-Germain |
| Hammern | German Empire | Markt Eisenstein | 1938 |
| Hamry | Czechoslovakia | Klatovy | 1945 |
| Hamry | Czechoslovakia | Klatovy | 1992 |
| - aufgelassen - | Czech Republic | Klatovy | 1993 |