Kortessem (Dutch pronunciation: [ˈkɔrtəsɛm]; Limburgish: Kotsoeve) is a municipality located in the Belgian province of Limburg near Hasselt.

The municipality consists of the following sub-municipalities: Kortessem, Guigoven, Vliermaal, Vliermaalroot, and Wintershoven.

Up until its destruction by a storm in 2009, Kortessem was the home of the Onzelievehereboom: a 1200-year-old oak.

Since 16 May 2014 Herman Van Rompuy is an honorary citizen.

This Belgian Limburg location article is a stub.