Ismāʿīl Bey (c. 1735? - March 1791), also known as Ismail Bey al-Kabir ("the Great") was a Mamluk emir and regent of Ottoman Egypt.
Ismail was supposedly of Georgian origin and became a Mamluk of the Emir Ali Bey al-Kabir in Egypt. During the Russo-Turkish War Ali Bey used the opportunity to declare Egypt's independence from the Ottoman empire. On Ali's behalf Ismail Bey suppressed a pro-Ottoman revolt in Lower Egypt (1768). Acting on Ali's orders he also invaded Hidjaz and subdued all of its ports and coastal towns north of Djidda (1770). When Ali Bey's most trusted general (and brother-in-law) Muhammad Bey Abu al-Dhahab betrayed him and marched against Cairo, Ismail Bey was sent out to intercept him but was forced to surrender and to submit (1772).
After Abu Dhahab's death (1775) Ismail Bey rallied the remaining mamluks of Ali Bey but failed to prevent Abu Dhahabs comrades Ibrahim Bey and Murad Bey from succeeding him. Murad tried to poison him, however, Ismail and the Ali-Bey-faction (Alawiyya) managed to expel the Abu-Dhahab-faction (Muhammadiyya) from Cairo to Upper Egypt (1777). A few months later several Alawiyya-emirs changed sides. Ibrahim and Murad came back and forced Ismail to flee (1778).
Mentor: Ali Bey
Rival: Abu Dhahab
Enemy: Murad Bey
Ally: Hasan Pasha
Following the intervention of the Ottoman admiral Cezayirli Gazi Hasan Pasha in 1786 Ismail Bey returned to Egypt and was installed as Shaykh al-Balad (civil governor and de facto ruler) while Ibrahim and Murad escaped to Upper Egypt again. Due to another Russo-Turkish War the Ottoman Empire withdrew the Turkish troops the next year. Ismail Bey asked the French consul whether France could send military instructors and training units. However, the French revolution made this impossible. Ismail Bey and almost the whole of his faction was wiped out because of the plague. After the Ismailiyya-regime collapsed, Ibrahim and Murad returned and took over the power again. Murad decided to reside in Ismail's palace.