Hassan al-Turabi was a Sudanese politician and scholar. He was the alleged architect of the 1989 Sudanese military coup that overthrew Sadiq al-Mahdi and installed Omar al-Bashir as president. He has been called "one of the most influential figures in modern Sudanese politics" and a "longtime hard-line ideological leader". He was instrumental in institutionalizing Sharia in the northern part of the country and was frequently imprisoned in Sudan, but these "periods of detention" were "interspersed with periods of high political office".

A coup d'état was carried out by the Sudanese Armed Forces on 30 June 1989 against the democratically elected government of Prime Minister Sadiq al-Mahdi and President Ahmed al-Mirghani. The coup was led by military officer Omar al-Bashir who took power in its aftermath; he ruled the country for the next 30 years until he was overthrown in 2019.