Adelaide of Leuven

Adelaide of Leuven (died ) was the wife of Simon I, Duke of Lorraine (1076–1138), in what is now France. She was the daughter of Henry III of Leuven and his wife Gertrude of Flanders. After the death of her husband, Adelaide retired to Tart Abbey.

The children of Simon I and Adelaide included: Matthias I, Duke of Lorraine Robert, Lord of Floranges Agatha of Lorraine, wife of Renaud III, Count of Burgundy Hedwige, wife of Frederick III, count of Toul Bertha, wife of Margrave Hermann III of Baden Mathilde, wife of Gottfried I, Count of Sponheim Baldwin John When her husband died in 1138, Adelaide went to the Cistercian house of Tart. Later on, in 1148, Adelaide founded the abbey of Etanche in the diocese of Toul.