Al-Malik Az-Zahir Sayf ad-Din Barquq (Arabic: الملك الظاهر سيف الدين برقوق) (ruled 1382–1389 and 1390 –1399) was the first Sultan of the Mamluk Burji dynasty.
The name Barquq means "plum" in Arabic (the English word was derived from the Arabic), and was taken by Barquq on his arrival in Egypt.
Barquq was of Circassian origin, and was acquired as a slave and became a mamluk in the household of Yalbugha al-Umari in approximately 1363-64 (or 764 on the Islamic calendar). During the reign of Sultan al-Mansur Ali, when Barquq held considerable influence in the Mamluk state, he brought his father Anas to Egypt in March 1381. Anas converted to Islam and became the first father of a first-generation mamluk to be mentioned by the Mamluk era sources because of his Muslim faith; the fathers of first generation mamluks were typically non-Muslims. Anas was promoted to the rank of emir of one hundred (the highest Mamluk military rank) and was known for his piety, kindness and charitable acts. He died ten months after his arrival to Egypt.
Since 1341, the Mamluk empire had been ruled by the descendants of al-Nasir Muhammad. However, none of them were strong enough to exert effective control. Many of the rulers were minors at the time of their accession, and would act as puppets for one or another competing Mamluk faction.
This happened in 1377, when the sultan al-Ashraf Sha'ban, who had ruled in his own stead since 1366, was overthrown and killed. The rebelling Mamluks replaced him on the throne with his seven-year-old son. When that puppet sultan died, he was replaced by the younger brother.
Barquq was a member of the faction behind the throne, serving in various powerful capacities in the court of the boy sultans. He consolidated his power until in November 1382 he was able to depose sultan al-Salih Hajji and claim the sultanate for himself. He took the reign name al-Zahir, perhaps in imitation of the sultan al-Zahir Baybars.