Kortenaken is a municipality located in the Belgian province of Flemish Brabant. The municipality comprises the towns of Hoeleden, Kersbeek-Miskom, Kortenaken proper, Ransberg and Waanrode. On January 1, 2006, Kortenaken had a total population of 7,540. The total area is 49.06 km² which gives a population density of 154 inhabitants per km².
Every year in August there is a three day festival in Kortenaken, named Boerenrock, with electro music on Friday, rock music and a party on Saturday, and on Sunday music for children and their parents.