| ntil | Name of Secretary-General | Nationality of Secretary-General | | a href="/encyclopedia/21-January" title="21 January">21 January 1961 | 30 April 1964 | Fuad Rouhani | Iran |
| a href="/encyclopedia/1-May" title="1 May">1 May 1964 | 30 April 1965 | Abdul Rahman al-Bazzaz | Iraq |
| a href="/encyclopedia/1-May" title="1 May">1 May 1965 | 31 December 1966 | Ashraf Lutfi | Kuwait |
| a href="/encyclopedia/1-January" title="1 January">1 January 1967 | 31 December 1967 | Muhammad Saleh Joukhdar | Saudi Arabia |
| a href="/encyclopedia/1-January" title="1 January">1 January 1968 | 31 December 1968 | Francisco R. Parra | Venezuela |
| a href="/encyclopedia/1-January" title="1 January">1 January 1969 | 31 December 1969 | Elrich Sanger | Indonesia |
| a href="/encyclopedia/1-January" title="1 January">1 January 1970 | 31 December 1970 | Omar el-Badri | Libya |
| a href="/encyclopedia/1-January" title="1 January">1 January 1971 | 31 December 1972 | Nadim Pachachi | Iraq |
| a href="/encyclopedia/1-January" title="1 January">1 January 1973 | 31 December 1974 | Abderrahman Khne | Algeria |
| a href="/encyclopedia/1-January" title="1 January">1 January 1975 | 31 December 1976 | M.O. Feyide | Nigeria |
| a href="/encyclopedia/1-January" title="1 January">1 January 1977 | 31 December 1978 | Ali M. Jaidah | Qatar |
| a href="/encyclopedia/1-January" title="1 January">1 January 1970 | 31 December 1981 | Ren G. Ortiz | Ecuador |
| a href="/encyclopedia/1-July" title="1 July">1 July 1981 | 30 June 1983 | Marc Saturnin Nan Nguema | Gabon |
| a href="/encyclopedia/1-July" title="1 July">1 July 1983 | 30 June 1988 | Fadhil J. al-Chalabi | Iraq |
| a href="/encyclopedia/1-July" title="1 July">1 July 1988 | 30 June 1994 | Subroto | Indonesia |
| a href="/encyclopedia/1-July" title="1 July">1 July 1994 | 31 December 1994 | Abdallah Salem el-Badri | Libya |
| a href="/encyclopedia/1-January" title="1 January">1 January 1995 | 31 December 2000 | Rilwanu Lukman | Nigeria |
| a href="/encyclopedia/1-January" title="1 January">1 January 2001 | 30 June 2002 | Al Rodrguez Araque | Venezuela |
| a href="/encyclopedia/1-July" title="1 July">1 July 2002 | 31 December 2003 | lvaro Silva Caldern | Venezuela |
| a href="/encyclopedia/1-January" title="1 January">1 January 2004 | ||Purnomo Yusgiantoro||Indonesia |