Valby Langgade is one of the main streets of the Valby district of Copenhagen, Denmark. The circa 3.2 km long street runs from the southern end of Pile Allé and the Carlsberg neighbourhood in the east to Roskildevej at Damhus Lake in the west. The square and side street Valby Tingsted was the centre of the original village of Valby.
The street is part of the old main road between Copenhagen's West Gate and Roskilde. The road made a detour by way of the village of Valby to avoid the steepest part of Valby Hill. Today's side street Skolegade was the first part of the road to Køge.Frederiksberg Palace was built on the top of the hill in 17++. The gardens of the new royal summer retreat reached all the way to Valby Langgade.
The new and more direct Roskilde Road which went through the royal gardens of Frederiksberg Palace, bypassing Balby, was inaugurated in 1776.
In the 1770s, Valby was transformed from village to suburb and the road changed even more after Valby became part of Copenhagen Municipality in 1901. Apartment buildings with five and six storeys sprung up and the Norden porcelain factory was established on the south side of the road a little to the west of the odl village centre in 1916. It later became part of Bing & Grøndahl.
The Carl Jacobsen House (Valby Langgade 1) on the corner with Ny Carlsberg Vej is from the 1890s and is the former home of Carl Jacobsen. It was designed by Hack Kampmann and is attached to the former Carlsberg Museum which was later replaced by Ny Carlsberg Glyptotek and is now used as a conference venue. Carlsberg Group is building a new global headquarters which will span Gamle Carlsbergvej on an adjacent site..