The UN's most visible public figure is the Secretary-General. The current Secretary-General is Ban Ki-moon of South Korea, who assumed the post on 1 January 2007.
Secretaries-General- Trygve Lie, Norway (1945-1953)
- Dag Hammarskjöld, Sweden (1953-1961)
- U Thant, Burma (1961-1971)
- Kurt Waldheim, Austria (1972-1981)
- Javier Pérez de Cuéllar, Peru (1982-1991)
- Boutros Boutros-Ghali, Egypt (1992-1996)
- Kofi Annan, Ghana (1997-2006)
- Ban Ki-moon, South Korea (2007-incumbent)
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