UN General Secretary Timeline By kenyurick Period: Oct 24, 1945 to Feb 1, 1946 Gladwyn Jebb, United Kingdom Period: Feb 2, 1946 to Nov 10, 1952 Trygve Lie, Norway Period: Apr 10, 1953 to Sep 18, 1961 Dag Hammarskjöld, Sweden Period: Nov 30, 1961 to Dec 31, 1971 U Thant, Burma Period: Jan 1, 1972 to Dec 31, 1981 Kurt Waldheim, Austria Period: Jan 1, 1982 to Dec 31, 1991 Javier Pérez de Cuéllar, Peru Period: Jan 1, 1992 to Dec 31, 1996 Boutros Boutros-Ghali, Egypt Period: Jan 1, 1997 to Dec 31, 2006 Kofi Annan, Ghana Period: Jan 1, 2007 to Dec 31, 2016 Ban Ki Moon, South Korea