Bojskov was formerly part of the German Empire. In the German Empire, the place was called Boiskov.
The place is now called Bojskov and belongs to Denmark.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Boiskov | German Empire | Hadersleben | before the Versailles Treaty |
| Bojskov | Denmark | Haderslev | after the Versailles Treaty |
| Bojskov | Denmark | Sønderjylland | 1993 |