Al-Adil I (, in full al-Malik al-Adil Sayf ad-Din Abu-Bakr Ahmed ibn Najm ad-Din Ayyub, ,‎ "Ahmed, son of Najm ad-Din Ayyub, father of Bakr, the King, the Just, Sword of the Faith"; 1145–1218) was an Ayyubid Sultan of Egypt and Syria of Kurdish descent. From his laqab or honorific title Sayf ad-Din ("Sword of Faith"), he was known to the Frankish Crusaders as Saphadin, a name by which he is still called in the Western world. A gifted and effective administrator and organizer, Al-Adil provided crucial military and civilian support for the great campaigns of his brother Saladin (an early example of a great minister of war). He was also a capable general and strategist in his own right, and the foundation and persistence of the Ayyubid state was as much his achievement as it was Saladin's.