Nexø, sometimes spelled Neksø, is a town on the east coast of the Baltic island of Bornholm, Denmark. With a population of 3,674, it is the second largest town, as well as the largest fishing port on the island. Fishing was previously the mainstay of the town's economy. Nexø is also the site of a distillery and a mustard factory. The town is also a port of call for the passenger ferries linking Bornholm with Kołobrzeg in Poland. Dueodde, the largest beach on Bornholm, is located south of Nexø, in the southeastern corner of the island.

Bornholm is a Danish island in the Baltic Sea, to the east of the rest of Denmark, south of Sweden, northeast of Germany and north of Poland.