The UCPH Department of Computer Science is a department in the Faculty of Science at the University of Copenhagen (UCPH). It is the longest established department of Computer Science in Denmark and was founded in 1970 by Turing Award winner Peter Naur. As of 2021, it employs 82 academic staff, 126 research staff and 38 support staff. It is consistently ranked the top Computer Science department in the Nordic countries, and in 2017 was placed 9th worldwide by the Academic Ranking of World Universities.

The Faculty of Science at the University of Copenhagen houses 12 departments, including the Natural History Museum of Denmark. The faculty also encompasses several national and international research centres, and has a number of field stations in Denmark and Greenland, among them the university's Arctic Station in central West Greenland. The faculty's administration is housed at the university's Frederiksberg Campus.