The Vendsyssel railway line (Danish: Vendsysselbanen) is a 80.7 km (50.1 mi) long standard gauge single track railway line in Denmark which runs through the historical region of Vendsyssel between Aalborg and Frederikshavn in North Jutland.

[2] Passengers crossing the Limfjord, a shallow sound separating the North Jutlandic Island from the rest of the Jutland Peninsula, between Nørresundby station and Aalborg station had two opportunities: a ferry or crossing the pontoon bridge located further east on foot.

[8] On 28 March 2012 the Limfjord railway bridge was hit by a ship and severely damaged so it was unusable for trains.

[6] The main line passes west of Lindholm Høje and Hammer hills and continues north to Brønderslev and Hjørring.

[10][11] The line is owned and maintained by the railway infrastructure manager Rail Net Denmark, a government agency under the Danish Ministry of Transport.