Gammel Kongevej (literally "Old King's Road) is the principal shopping street of Frederiksberg in Copenhagen, Denmark. Running roughly parallel to Frederiksberg Allé and Vesterbrogade, it extends from Vesterport station at the southern end of The Lakes and continues for some 1.8 km west to Frederiksberg City Hall Square where it continues as Smallegade. In the opposite end, Jernbanegade connects it to Copenhagen City Hall Square.
Gammel Kongevej is one of the oldest road sections in Frederiksberg, originally providing a direct connection between Copenhagen's Western City Gate and the village of Solbjerg. From there the it continued past the Damhus Lake towards Roskilde, giving rise to the name Roskildegaden ("The Roskilde Street"), which is seen in some documents from the beginning of the 17th century.
The road was improved by Christian IV in the 1620s. The name Kongevejen (English: King's Road) emerged about a generation later when it became the principal road to Ny Amager (New Amager), as Frederiksberg was then called, where the king had several properties. The name of the road changed to Gammel Kongevej after a new Route de Roie, Frederiksberg Allé, opened in 1705.
The road passed through open countryside with only a few scattered country houses until the mid-19th century when Copenhagen's fortifications were decommissioned and the city was allowed to develop freely. A number of new country houses were built along the rad but most of them were replaced by multi-story apartment buildings with shops in the ground floors in the 1880s and 1890s.
P. Andersen opened the Svanholm Brewery at No. 64 in 1853. It was merged with several other breweries to form The United Breweries in 1891 and most of its buildings were replaced by a machine factory and iron factory.