Ittre is a municipality of Wallonia located in the Belgian province of Walloon Brabant. Since the fusion of the Belgian municipalities in 1977, the municipality is composed of three districts: Haut-Ittre, Ittre and Virginal-Samme. Ittre was the geographical center of Belgium until World War I. The geographical center was moved to Walhain due to the allocation of the East Cantons to Belgium.