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