Muqtada al-Sadr is an Iraqi Shia Muslim cleric, politician and militia leader. He is the leader of the Sadrist Movement and the leader of the Peace Companies, a successor to the militia he had previously led during the American military presence in Iraq, the Mahdi Army. In 2018, he joined his Sadrist political party to the Saairun alliance, which won the highest number of seats in the 2018 and 2021 Iraqi parliamentary elections.

The Sadrist Movement is an Iraqi Shi'a Islamic national movement and political party, led by Muqtada al-Sadr.