Breg was formerly part of the German Empire. In the German Empire, the place was called Breg.
The place is now called Breg and belongs to Slovenia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Breg | Austro-Hungary | Krainburg/Kranj | before the Treaty of Saint-Germain |
| Breg | Yugoslavia | Kranj | after the Treaty of Saint-Germain |
| Breg | German Empire | Krainburg | 1941 |
| Breg ob Savi | Yugoslavia | Kranj | 1945 |
| Breg ob Savi | Yugoslavia | Socialistična rep. Slovenija | 1992 |
| Breg | Slovenia | Slowenien | 1991 |