Sancha of León was an 11th-century monarch who ruled as queen of León and Galicia. Born around 1018, she was the daughter of Alfonso V of León. She married Ferdinand I, the Count of Castile who eventually became the King of León. Throughout her life, Sancha held significant religious responsibilities, including serving as the secular abbess of San Pelayo. She was the mother of five children and sought to maintain peace among her sons during their later conflicts.