Anholt is a Danish island in the Kattegat, midway between Jutland and Sweden at the entrance to the North Sea in Northern Europe. There are 150 permanent residents as of 1 January 2022. Anholt is seven mi (11 km) long and about four mi (6.4 km) wide at its widest, and covers an area of 21.75 km2 (8.40 sq mi). Anholt is part of Norddjurs Municipality in Region Midtjylland. Before the 2007 municipal reform, it was in Grenå Municipality.

The Kattegat is a 30,000 km2 (12,000 sq mi) sea area bounded by the Jutlandic peninsula in the west, the Danish Straits islands of Denmark and the Baltic Sea to the south and the provinces of Bohuslän, Västergötland, Halland and Skåne in Sweden in the east. The Baltic Sea drains into the Kattegat through the Danish Straits. The sea area is a continuation of the Skagerrak and may be seen as a bay of the North Sea and North Atlantic Ocean, but in traditional Scandinavian usage, this is not the case.