Al-Mansur Ali (, epithet: al-Malik al-Maná¹£à «r Nà «r ad-dën þAlë ibn Aybak, Arabic: ) (b. c. 1242) was the second of the Mamluk Sultans of Egypt in the Turkic, or Bahri, line. Some historians, however, consider Shajar al-Durr as the first of the Mamluk Sultans; thus, to them Al-Mansur Ali was the third Mamluk Sultan and not the second. He ruled from 1257 to 1259 after the assassination of his father Aybak during a turbulent period that witnessed the Mongols invasion of the Islamic world.