The Grenaa Line (Danish: Grenaabanen) is a 68.9 km (42.8 mi) long standard gauge single track railway line in Denmark which runs between Aarhus and Grenaa through the peninsula of Djursland. The railway opened in 1876–1877. It is owned and maintained by Rail Net Denmark and served with passenger trains by the Danish State Railways (DSB). It now functions as a commuter rail service in the Aarhus area and carries 1 million passengers annually.