From 1977 to 2006 the post name was Executive Secretary
- Aboubakar Diaby Ouattara (Côte d'Ivoire) January 1977 – 1985
- Momodu Munu (Sierra Leone) 1985–1989
- Abass Bundu (Sierra Leone) 1989–1993
- Édouard Benjamin (Guinea) 1993–1997
- Lansana Kouyaté (Guinea) September 1997 – 31 January 2002
- Mohamed Ibn Chambas (Ghana) 1 February 2002 – 31 December 2006
