Al-Mansur Ala' ad-Din Ali ibn Sha'ban ibn Husayn ibn Muhammad ibn Qalawun (1368 – 19 May 1381), better known as al-Mansur Ali II, was the Mamluk sultan reigning in 1377–1381. He was installed to the throne while a child by the senior Mamluk emirs after they had rebelled against and killed al-Mansur Ali's father, Sultan al-Ashraf Sha'ban (r. 1361–1377). Al-Mansur Ali was a figurehead, with real power being held by the senior emirs, most prominently Barquq. Al-Mansur Ali died about four years into his reign and was succeeded by his younger brother, as-Salih Hajji, although real power was still held by Barquq, who usurped the throne in 1382.