Explanation

The Secretaries-General of the OIC since its establishment are:

1. H.R.H. Tunku Abdul Rahman (Malaysia): 1971-1973
2. H.E. Hassan Al-Touhami (Egypt): 1974-1975
3. H.E. Dr. Amadou Karim Gaye (Senegal): 1975-1979
4. H.E. Mr. Habib Chatty (Tunisia): 1979-1984
5. H.E. Syed Sharifuddin Pirzada (Pakistan): 1985-1988