Musa Sadr al-Din al-Sadr was an Iranian-Lebanese Shia Muslim cleric and politician. In Lebanon, he founded and revived many Lebanese Shia organizations, including schools, charities, and the Amal Movement.

The Amal Movement is a Lebanese political party and former militia affiliated with the Shia community of Lebanon. It was founded by Musa al-Sadr, Mostafa Chamran and Hussein el-Husseini in 1974 as the "Movement of the Deprived." The party has been led by Nabih Berri since 1980. The Greek Catholic Archbishop of Beirut, Grégoire Haddad, was among the founders of the movement.