Lambjærg was formerly part of the German Empire. In the German Empire, the place was called Lamberg.
The place is now called Lambjerg and belongs to Denmark.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Lamberg | German Empire | Sonderburg | before the Versailles Treaty |
| Lambjærg | Denmark | Sønderborg | after the Versailles Treaty |
| Lambjerg | Denmark | Sønderjylland | 1993 |