Tagensvej is a major street in the northwestern part of inner Copenhagen, Denmark. It runs from Blegdamsvej on the border between Nørrebro and Østerbro in the southeast to Frederiksborgvej and Bispebjerg Cemetery in the northwest.

The first part of the street is dominated by Rigshospitalet, University of Copenhagen's North Campus and one of University College Copenhagen's campuses (No. 16). Buildings directly on the street include the Panum Building and the Faculty Library of Natural and Health Sciences (KUB Nord). Metropolitan UC's building at No. 18-20 is home to Copenhagen Military Hospital which was built in 1918-1928 to design by Gunnar Laage as a replacement for the Garrison Hospital in Rigensgade. Just off Tagensvej, on the new street Ole Maaløes Vej, is BRIC – Biotech Research and Innovation Centre

The street is also home to several halls of residences. Studentergården (No. 15) with 140 dwellings built in 1923 to design by Martin Borch. Hollegiegården (No. 52B) with 168 rooms is from 1961.

Holger Petersen's former textile manufactury at No. 85 was built in 1883 to design by Johan Schrøder and expanded by Bernhard Ingemann in 1905. The site also includes two terraces of workers' housing from 1885 which were also designed by Schrøder. The entire complex is listed.^[2] Bernhard Ingemann has also designed the neighbouring, Neo-Baroque apartment building from 1916 at No. 81.^[3]

The far end of the street is dominated by large housing estates. Located on the southwest side of Tagensveh and northwest of Tuborgvej, Bispeparken was with its 827 apartments the largest housing estate in Scandinavia at the time of its completion in 1941, The masterplan for the development was designed by Ivar Bentsen in collaboration with Kooperative Arkitekter while the individual buildings were designed by different architects.^[4] On the other side of Tagensvej, a little further north, is På Bjerget ("On the Hill"), a development of uniform houses which surrounds Grundtvig's Church. It was designed by Peder Vilhelm Jensen-Klint in collaboration with Vilhelm Wittrup, Charles I. Schou and Georg Gøssel, the buildings contain the parish hall and apartments and were built from 1924 to 1926.

At Rigshospitalet, on the corner of Tagensvej with Blegdamsvej, stands Rudolph Tegner's large group sculpture Towards the Light. It was installed in 1909 as a memorial to the physician and scientist Niels Ryberg Finsen who won the Nobel Prize in Medicine and Physiology in 1903.^[5] On the gable of Tagensvej 52 is a mural by Jonas Hvid Søndergaard from 2012. ^[6]

Bispebjerg station is located at the far end of the street. It is served by the F trains on the Ring Line of the S-train network. Skjold Plads Station, served by Copenhagen Metro's City Circle Line, opened at the junction with Haraldsgade in September 2019.