Adela of Normandy also known as Adela of Blois and Adela of England (c. 1062 or 1067 – 8 March 1137?) was, by marriage, Countess of Blois, Chartres, and Meaux. She was a daughter of William the Conqueror and Matilda of Flanders. She was also the mother of Stephen, King of England and Henry of Blois, Bishop of Winchester.
She was the favourite sister of King Henry I of England; they were probably the youngest of the Conqueror's children. Adela was a high-spirited and educated woman, with a knowledge of Latin.