Abdul Aziz bin Abdullah bin Abdul Rahman bin Mohammad bin Abdullah bin Baaz (b. 1905 Riyadh, Saudi Arabia, d. 1999) was the Grand Mufti of Saudi Arabia, the highest religious figure in the Kingdom, from 1993 until his passing. He was head of the Committee for the Propagation of Virtue and Prevention of Vice, and his decisions were given great prominence in Saudi Arabia.
When he was sixteen, he started losing his eyesight after a serious infection in his eyes and by the time he was twenty, he had totally lost his sight. He learned studied with Sheikh Muhammad Bin Ibraheem Bin Abdullateef Al Asheikh for ten years, Sheikh Saad Bin Hamad Bin Ateeque, the judge of Riyadh at that time, the grammarian Sheikh Hammed Bin Farris, and Sheikh Saad Wakhas Al-Bukhari, one of Mecca's esteemed scholars of tajweed (reciting the Quran). Abdul Aziz bin Baaz assumed a number of posts and responsibilities, including judge of Kharj, teacher at the Riyadh Institute of Science, Vice President and President of the Islamic University in Medina, Chairman of the [Government] Department of Scientific Research and Ifta, which gave him the rank of Minister, Grand Mufti of the Kingdom of Saudi Arabia, and Head of the Council of Ulama (Senior Religious Scholars), President and Member of the Constituent Assembly of the Muslim World League, President of the Higher World League Council, and President of the Islamic Fiqh Assembly based in Mecca. He also wrote over sixty books in different fields and issued a large body of fatwas (religious decrees). He was awarded the King Faisal International Prize for Service to Islam in 1981.