Princess Stephanie of Windisch-Graetz (9 July 1909 in Ploskovice, Bohemia – 7 September 2005 in Uccle, Belgium) was the daughter of Archduchess Elisabeth Marie of Austria (1883–1963), only child of Crown Prince Rudolf of Austria and Princess Stéphanie of Belgium, and Prince Otto Weriand of Windisch-Graetz (1873–1952).