Portal:Belgium/Anniversaries/September/September 20
- 1085: death of Hermann II, Count Palatine of Lotharingia, Count of Brabant
- 1460: death of Gilles Binchois, Renaissance composer
- 1608: birth of Luis de Benavides Carrillo, Marquis of Caracena, Governor of the Habsburg Netherlands
- 1852: birth of Baron Empain, entrepreneur, founder of the modern Heliopolis
- 1859: birth of Cyriel Buysse, writer
- 1914: birth of Marcel Kint, cyclist, winner of Paris–Roubaix and the 1938 World Cycling Championship
- 1942: birth of Robbe De Hert, film director
- 1970: birth of Gert Verheyen, soccer player with 50 appearances with the Belgium national football team