Georges Lemaître (1920) - Cosmologist known for proposing the Big Bang theory.
Christian de Duve (1941) - Nobel Laureate in Physiology or Medicine for his discoveries concerning the structural and functional organization of the cell.
François Englert (1959) - Nobel Laureate in Physics for the theoretical discovery of a mechanism that contributes to our understanding of the origin of mass of subatomic particles.
Jean-Luc Dehaene (1960) - Former Prime Minister of Belgium, known for his contributions to Belgian and European politics.