Aarsdale (also: Årsdale) is a village on the eastern coast of the Baltic island of Bornholm, Denmark.

[1] Once a prosperous fishing village, its economy now relies mainly on tourism thanks to its half-timbered houses, its harbour and its windmill.

The eight-sided Dutch windmill (1877) close to the main road at the southern end of the village is a local landmark.

It is the only windmill on the island which has been in constant operation since it was built serving three generations of the Mikkelsen family.

Aarsdale has a small beach suitable for bathing on Bornholm's rocky eastern coast.