The Battle of Mansurah was fought from 8 to 11 February 1250, between Crusaders led by Louis IX, King of France, and Ayyubid forces led by Sultana Shajar al-Durr, vizier Fakhr ad-Din ibn as-Shaikh, Faris ad-Din Aktai and Baibars al-Bunduqdari. It was fought in present-day Mansoura, Egypt. The Crusader force was enticed into entering the town where it was set upon by the Muslim force. The Crusaders withdrew in disorder to their encampment where they were besieged by the Muslims. The Crusaders broke-out and withdrew to Damietta in early April.

Al-Malik al-Zahir Rukn al-Din Baybars al-Bunduqdari, commonly known as Baibars or Baybars and nicknamed Abu al-Futuh, was the fourth Mamluk sultan of Egypt and Syria, of Turkic Kipchak origin, in the Bahri dynasty, succeeding Qutuz. He was one of the commanders of the Egyptian forces that inflicted a defeat on the Seventh Crusade of King Louis IX of France. He also led the vanguard of the Egyptian army at the Battle of Ain Jalut in 1260, which marked the first substantial defeat of the Mongol army and is considered a turning point in history.