Mustafa Abdul Jalil[1] (Arabic: مصطفى عبد الجليل; also transcribed Abdul-Jelil, Abd-al-Jalil,[2] Abdel-Jalil, Abdeljalil or Abdu Al Jeleil; born 1952)[3] is a Libyan politician who was the Chairman of the National Transitional Council from 5 March 2011 until its dissolution on 8 August 2012.

This position meant he was de facto head of state during a transitional period after the fall of Muammar Gaddafi's government in the Libyan Civil War, and until the handover of power to the General National Congress.

[4] After graduating from the department of Shari'a and Law in the Arabic Language and Islamic Studies faculty of University of Libya in 1975, Abdul Jalil was initially "assistant to the Secretary of the Public Prosecutor" in Beida, before being appointed a judge in 1978.

Following his resignation from Gaddafi's government in protest at its actions during the Libyan Civil War, a bounty of 500,000 dinars, roughly 400,000 USD, was announced for his capture.

The paper opined that Abdul Jalil was responsible for the "intransigence" of the court in confirming the death sentences in the "Bulgarian nurses" HIV trial under Gaddafi.

[1] As the Battle of Tripoli tilted in favor of forces answering to the NTC, Abdul Jalil said on 24 August that democratic elections would be held in eight months.

[17] On 24 February 2011, opposition politicians, former military officers, tribal leaders, academics and businessmen held a meeting in the eastern city of Beida.

[19][20] On 25 February 2011, Al Jazeera reported that talks are taking place between "personalities from eastern and western Libya" to form an interim government for the post-Gaddafi era.

[30] An email from Sidney Blumenthal to Hillary Clinton states that "in July and August 2011 NTC security officers discovered evidence that Younis was in secret contact with Saif al Islam Qaddafi.

"[31] The same email to Clinton also states that "Zeidan's efforts are complicated by the ongoing legal problems of former National Transitional Council (NTC) leader Mustafa Abdul-Jalil, who will be questioned by both military and civilian prosecutors regarding his role in the July 2011 assassination of General Abdel-Fattah Younis, Gadhafi's former interior minister and one of the first major defectors from the old regime.