Gisela, Abbess of Chelles was a Frankish princess and Benedictine nun who lived from approximately 757 to 810. As the daughter of Pepin the Short and the sister of Charlemagne, she chose a religious life over potential political marriages. She eventually served as the abbess of Chelles Abbey, where she managed a highly productive scriptorium. During her leadership, she contributed to the Carolingian Renaissance by expanding the abbey's library and overseeing the reconstruction of the church of St. Mary.