European route E39 is the designation of a 1,330-kilometre (830 mi) north–south road in Norway and Denmark from Klett, just south of Trondheim, to Aalborg via Bergen, Stavanger and Kristiansand.

[1] The E39 is mostly a two-lane undivided road, and only relatively short sections near Stavanger, Trondheim and Bergen are motorways or semi-motorways.

Domestic car ferries on the E39 are regarded as an integral part of national highways.

In 1786, a royal decision was made to establish a postal route between Bergen and Trondheim.

The bridges and tunnels are: Other large road projects include: The route Trondheim–Ålesund–Bergen–Stavanger–Kristiansand was named E39 in 2000.