Al-Ashraf Sayf ad-Dīn Barsbāy (Arabic: الأشرف سيف الدين برسباي) was the ninth Burji Mamluk sultan of Egypt from AD 1422 to 1438.

He later assumed the role of tutor to Muhammad, the son of Sultan Tatar, who was just ten years old upon ascending to the throne.

He apparently had a reputation simultaneously for being greedy and bad-tempered but also generous to the poor and to Sufis (the latter tendency being evident in his mausoleum-khanqah complex in the Northern Cemetery).

[7] He was responsible for a number of administrative reforms in the Mamluk state, including the consolidation of the sultanate as a military magistrature and securing for Egypt exclusive rights over the Red Sea trade between Yemen and Europe.

[8] In the process he diverted the Indian Ocean trade routes through Jeddah (closer to Cairo) and also introduced a state monopoly on sugar and pepper.

[9][7] His Red Sea activity included the final destruction in 1426 of ‘Aydhab, a once important port which had been in decline in the previous century.

He reduced customs duties to attract merchants until Egypt became a monopoly of most trade in the East, angering some European powers at the time.

Barsbay had good ties with other Muslim rulers of his time, namely Jalaluddin Muhammad Shah, the Sultan of Bengal.

In 1436, the Governor of Jeddah sent some men to search the Red Sea for the gifts and they came back with the textiles although the spices were damaged by the water.

After Barsbay was informed of this by the governor, he ordered for the arrest of all members of the Bengali embassy, the confiscation of their envoy's merchandise, and banned them from ever travelling to Cairo again.

[16] The revenues from this military victory and these trade policies may have helped him finance his construction projects, and he is known for at least three extant and notable monuments.