Rønne is the largest town on the Danish island of Bornholm in the Baltic Sea. It has a population of 13,798. It was a municipality in its own right from 1970 until 2002, when Bornholm was a county. It has an area of 29.11 square kilometres, and is the administrative centre of the Bornholm municipality. As of 2018 11,539 inhabitants live in Rønne Parish, which is a narrow piece of land on the westernmost of the island and stretching north and southward comprising around a third of the area of the former municipality. Knudsker Parish made up the rest of the former municipality. Not all inhabitants of either Rønne or Knudsker (400-7553) parishes live in the city of Rønne.

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.