The secretary general of the Organisation of Islamic Cooperation (Arabic: أمين عام منظمة التعاون الإسلامي; French: Secrétaire général de l'Organisation de la coopération islamique), is the chief administrative officer of the Organisation of Islamic Cooperation (OIC) and the head of the General Secretariat and other organs of the OIC.

A secretary general is elected by the recommendation of the OIC Council of Foreign Ministers from the 57 member states for a renewable term of five years.

[4] Any member state is entitled to be eligible for the post with rotation and equal opportunity, integrity and experience.

It implements final decision and resolutions made or recommended by the Council of Foreign or the Ministers and Islamic summits associated with the organisation.

A secretary general coordinates with the other organs of the OIC for better understanding and collaboration, in addition to exchange important decisions pertaining to the member states.