Fatima bint Muhammad Al-Fihriyya was an Arab woman who is credited with founding the al-Qarawiyyin mosque in 859 AD in Fez, Morocco. She is also known as "Umm al-Banayn". Al-Fihri died around 880 AD. The Al-Qarawiyyin mosque subsequently developed a teaching institution, which became the University of al-Qarawiyyin in 1963.
Her story is told by Ibn Abi Zar' in The Garden of Pages as founding the Qarawiyyin Mosque. Since she was first mentioned many centuries after her death, her story has been hard to substantiate and some modern historians doubt she ever existed.