Salah ad-Din (Arabic: صلاح الدين), Salahu’d-Din, Ṣalāḥ ud-Dīn, Salah ed-Din and other variant spellings, is an Arabic name that means The Righteousness of the Faith.
It commonly refers to An-Nasir Salah ad-Din Yusuf ibn Ayyub (Arabic: صلاح الدين يوسف بن أيوب), known as Saladin, the first sultan of Egypt and Syria and the founder of the Ayyubid dynasty.
Other notable people with the name, or known by the name, include (listed by nationality):