Kortenberg (Dutch pronunciation: [ˈkɔrtə(m)bɛr(ə)x]; French: Cortenbergh) is a Belgian municipality located in the province of Flemish Brabant, about halfway between the cities of Brussels and Leuven.

The conventuals moved in 1222 from the hill (the 'Curtenbergh') to lower grounds at the Minneveld, where the Abbey of Kortenberg still exists on this day.

In the end of the nineteenth century the new bourgeoisie built a whole range of new residences in the style of the Belle Epoque with the typical spires.

On 27 August 1914 German troops put a local brewery, some residences and a little castle on fire while invading Kortenberg.

After the Magna Carta, it is the second document in western history to limit the powers of monarchs in favour of a number of civil freedoms.

The abbey, which is owned by the diocese, became a protected monument on 14 February 2005 as part of resolution made by the Flemish government.

Secondary schools are mostly attended in other municipalities such as Tervuren, Zaventem, Wezembeek-Oppem, Leuven, Haacht, and in the Brussels-Capital Region.