The Al-Azhar University ( AHZ-har; Arabic: جامعة الأزهر (الشريف), IPA: [ˈɡæmʕet elˈʔɑzhɑɾ eʃʃæˈɾiːf], "the University of (the honorable) Al-Azhar") is a public university in Cairo, Egypt. Associated with Al-Azhar Al-Sharif in Islamic Cairo, it is Egypt's oldest degree-granting university and is renowned as the most prestigious university for Islamic learning. In addition to higher education, Al-Azhar oversees a national network of schools with approximately two million students. As of 1996, over 4,000 teaching institutes in Egypt were affiliated with the university.

Founded in 970 or 972 by the Fatimid Caliphate as a centre of Islamic learning, its students studied the Qur'an and Islamic law in detail, along with logic, grammar, rhetoric, and how to calculate the phases of the moon. Today it is the chief centre of Arabic literature and Islamic learning in the world. In 1961 additional non-religious subjects were added to its curriculum.

Its library is considered second in importance in Egypt only to the Egyptian National Library and Archives. In May 2005, Al-Azhar in partnership with a Dubai information technology enterprise, IT Education Project (ITEP) launched the H.H. Mohammed bin Rashid Al Maktoum project to preserve Al Azhar scripts and publish them online (the "Al-Azhar Online Project") to eventually publish online access to the library's entire rare manuscripts collection, comprising about seven million pages of material.