Aabenraa (Danish pronunciation: [ɔːpm̩ˈʁɔˀ]; German: Apenrade, pronounced [apn̩ˈʁaːdə]; Sønderjysk: Affenråe) is a town in Southern Denmark, at the head of the , an arm of the Little Belt, 26 kilometres (16 mi) north of the Denmark–Germany border and 32 kilometres (20 mi) north of German town of Flensburg. It was the seat of Sønderjyllands Amt (South Jutland County) until 1 January 2007, when the Region of Southern Denmark was created as part of the 2007 Danish Municipal Reform. With a population of 16,401 (1 January 2022), Aabenraa is the largest town and the seat of the Aabenraa Municipality.