Den Polytekniske Læreanstalt, Danmarks Tekniske Universitet (i daglig tale Danmarks Tekniske Universitet eller blot DTU, er en selvejende uddannelses- og forskningsinstitution til uddannelse af civilingeniører og diplomingeniører samt forskning inden for ingeniørvidenskab.
The Technical University of Denmark was founded in 1829 as the 'College of Advanced Technology' (Danish: Den Polytekniske Læreanstalt). The initiative was taken by the renowned physicist Hans Christian Ørsted (then a professor at the University of Copenhagen) who also served as its principal until his death in 1851. The university is generally understood to be one of Europe's leading engineering institutions, and the best engineering university in Scandinavia.