Margaret de Bohun, Countess of Devon (3 April 1311 – 16 December 1391) was the granddaughter of King Edward I and Eleanor of Castile, and the wife of Hugh Courtenay, 10th Earl of Devon (1303–1377). Her seventeen children included an Archbishop of Canterbury and six knights, of whom two were founder knights of the Order of the Garter. Unlike most women of her day, she received a classical education and was a lifelong scholar and collector of books.