Ali Sadreddine Al-Bayanouni (Arabic: علي صدر الدين البيانوني) is a Muslim Brotherhood leader in exile in London.

[2] He was born in 1938 in Aleppo and brought up in a religious family, where his father and grandfather were both well-known Muslim scholars.

He joined the Muslim Brotherhood while in secondary school, in 1954, and went on to graduate with a law degree from the University of Damascus in 1963.

Bayanouni became a member of the Syrian Muslim Brotherhood's Shura Council and Executive Office in 1972.

He arrived in Britain as a political refugee in 2000, after the Jordanian authorities requested he leaves the country.