| Secretary-General | Country | Term |
| António Guterres | Portugal | 2017-Present |
| Ban Ki-moon | 2007-2016 | |
| Kofi Annan | 1997-2006 | |
| Boutros-Boutros-Ghali | 1992-1996 | |
| Javier Perez de Cuellar | 1982-1991 | |
| Kurt Waldheim | 1972-1981 | |
| U Thant | 1961-1971 | |
| Dag Hammarskjold | 1953-1961 | |
| Trygve Lie | 1946-1952 |
Source: United Nations