Fatima al-Fihri was the founder, in 859 CE, of the Qarawiyyin mosque-and-madrasa at Fez — one of the oldest continuously operating institutions of higher learning in the world and the principal religious and intellectual centre of medieval Morocco. She was the daughter of a wealthy merchant family from Kairouan in Ifriqiya that had migrated to Fez in the early ninth century, in the substantial Kairouani settlement that gave the Qarawiyyin its name.
According to the principal biographical source — Ibn Abi Zar's Rawd al-Qirtas, written in the early fourteenth century — Fatima inherited a substantial fortune from her father and devoted it to the construction of a mosque large enough to accommodate the growing Kairouani community of Fez. Her sister Maryam founded the smaller Andalusiyyin mosque in the same period for the parallel Andalusi community.
The Qarawiyyin became, over the eleventh and twelfth centuries, a teaching institution comparable in scale and prestige to the great madrasas of Baghdad and Cairo. Maliki jurisprudence, Quranic recitation, Arabic grammar, mathematics, astronomy, and medicine were taught from its rooms; among its alumni and visitors were Ibn Khaldun, Leo Africanus, Ibn al-Arabi, Maimonides, and the medieval pope Gerbert d'Aurillac (Sylvester II) according to a contested tradition.
The institution remains in continuous operation today, recognised by UNESCO as the oldest existing degree-granting university and by the Guinness Book of World Records as the world's oldest continuously operating educational establishment. Fatima al-Fihri's role in its founding has become a recurring point of reference for contemporary discussions of women's intellectual leadership in the medieval Islamic world.