The history of descriptive geometry in Denmark is primarily a story of teaching and its institutional setting. Only at the very end did a Danish mathematician contribute original research to the story. The subject was introduced in Denmark around 1830 in connection with the foundation of two new colleges, one civil and one military that were both inspired by the École polytechnique. The subject continued to be taught at the civil polytechnic college for about a century, after which descriptive geometry disappeared from Danish education. At the very end of the period, Hjelmslev’s geometry of reality added an original approach to Danish descriptive geometry; otherwise Danish descriptive geometers limited themselves to importing new ideas from abroad, in particular from France and Germany. However, Danish textbooks and exam questions bear witness to a high theoretical level of the descriptive geometry education in Copenhagen.