Ṣalāḥ ad-Dīn Yūsuf ibn Ayyūb (Arabic: صلاح الدين يوسف بن أيوب‎, Kurdish: سه‌لاحه‌دین ئه‌یوبی, Selah'edînê Eyubî) (c. 1138 — March 4, 1193), better known in the Western world as Saladin, was a Kurdish Muslim who became the Sultan of Egypt and Syria. He led Islamic opposition to the Franks and other European Crusaders in the Levant. At the height of his power, he ruled over Egypt, Syria, Iraq, Hejaz, and Yemen. He led the Muslims against the Crusaders and eventually recaptured Palestine from the Kingdom of Jerusalem after his victory in the Battle of Hattin. As such, he is a notable figure in Kurdish, Arab, Persian, Turkish and Muslim culture. Saladin was a strict practitioner of Sunni Islam. His chivalrous behavior was noted by Christian chroniclers, especially in the accounts of the siege of Kerak in Moab, and despite being the nemesis of the Crusaders he won the respect of many of them, including Richard the Lionheart; rather than becoming a hated figure in Europe, he became a celebrated example of the principles of chivalry, a rare distinction for a non-Christian.

Saladin was born in Tikrit, Iraq. His family was of Kurdish background and ancestry, and had originated from the city of Dvin, in Medieval Armenia. His father, Najm ad-Din Ayyub, was banished from Tikrit and in 1139, he and his brother Asad al-Din Shirkuh, moved to Mosul. He later joined the service of Imad ad-Din Zengi who made him commander of his fortress in Baalbek. After the death of Zengi in 1146, his son, Nur ad-Din, became the regent of Aleppo and the leader of the Zengids.

Saladin, who now lived in Damascus, was reported to have a particular fondness of the city, but information on his early childhood is scarce. About education, Saladin wrote "children are brought up in the way in which their elders were brought up." According to one of his biographers, al-Wahrani, Saladin was able to answer questions on Euclid, the Almagest, arithmetic, and law, but this was an academic ideal and it was study of the Qur'an and the "sciences of religion" that linked him to his contemporaries. Several sources claim that during his studies he was more interested in religion than joining the military. Another factor which may have affected his interest in religion was that during the First Crusade, Jerusalem was taken in a surprise attack by the Christians. In addition to Islam, Saladin had a knowledge of the genealogies, biographies, and histories of the Arabs, as well as the bloodlines of Arabian horses. More significantly, he knew the Hamasah of Abu Tammam by heart.