ʿAbdul Qādir Gīlānī, (Arabic: عبدالقادر الجيلاني, romanized: ʿAbd al-Qādir al-Jīlānī; Persian: عبدالقادر گیلانی) known by admirers as Muḥyī l-Dīn Abū Muḥammad b. Abū Sāliḥ ʿAbd al-Qādir al-Jīlānī al-Baḡdādī al-Ḥasanī al-Ḥusaynī (March 23, 1078 – February 21, 1166), was a Sunni Muslim preacher, ascetic, mystic, jurist, and theologian belonging to the Hanbali school, known for being the eponymous founder of the Qadiriyya tariqa (Sufi order) of Sufism. The Qadiriyya tariqa is named after him.