●President of the 56th session of the General Assembly 2001-2002
●Security Council 1996-1997, 2013-2014
●Economic and Social Council (ECOSOC) 1993-1995, 1997-1999, 2003-2006, 2008-2010, 2011-2013, 2014-2016, 2017-2019, 2020-2022, 2023-2025
●Human Rights Council (HRC) 2006-2008, 2009-2011, 2013-2015, 2016-2018, 2020-2022
●Advisory Committee on Administration and Budgetary Questions(ACABQ) 2023-2025
●Committee on Contributions(COC) 2000-2002, 2003-2005, 2006-2008, 2012-2026
●Functional Commissions of ECOSOC
○Commission on Narcotic Drugs (CND) 1963-1968, 1982-1985, 1992-2003, 2006-2009, 2012-2015, 2016-2019, 2022-2025
○Commission on the Status of Women (CSW) 1994-2001, 2002-2010, 2010-2014, 2014-2018, 2018-2022, 2023-2027
○Commission on Population and Development (CPD) 1996-2001
○Commission on Sustainable Development (CSD) 1993-1995, 1999-2006, 2007-2010
○Statistical Commission 2004-2007, 2016-2019, 2020-2023
○Commission for Social Development (CSocD) 1996-2008, 2008-2012, 2012-2016, 2016-2020, 2020-2024
○Commission on Crime Prevention and Criminal Justice (CCPCJ) 2003-2005, 2006-2008, 2009-2011, 2013-2015, 2016-2018, 2021-2023
○Commission on Science and Technology for Development (CSTD) 1998-2001
○Commission on Human Rights (CHR) 1993-2007
○Peacebuilding Commission (PBC) 2009-2010, 2011-2012, 2015-2016, 2017-2018, 2019-2020, 2021-2022, 2023-2024
○Chair of the Peace Building Commission 2017
○Vice Chair of the Peace Building Commission 2016, 2018
○Commission for Programme and Coordination (CPC) 1993-2025
●Governing Bodies for Funds and Programmes
○UN Children’s Fund (UNICEF) 1988-1997, 2006-2008, 2009-2011, 2012-2014, 2015-2017, 2018-2020, 2021-2023
○UN Women 2011-2013, 2014-2016, 2017-2019, 2020-2022, 2023-2025
○President of the 2012 Executive Board of UN Women
○Vice President of the 2018 Executive Board of UN Women
○UN Development Programme(UNDP) 1994-1995, 1998-2000, 2008-2010, 2012-2014, 2016-2018, 2023-2025
○UN Population Fund(UNFPA) 1998-2000, 2008-2010, 2012-2014, 2016-2018, 2023-2025
○Vice President of the 2018 Executives Board of UNDP/UNFPA/UNOPS
○President of the 2019 Executives Board of UNDP/UNFPA/UNOPS
○UN Environmental Programme(UNEP) 1987-1989, 1994-2005, 2006-2009, 2010-2013, 2014-2017, 2018-2019.5.
○UN Human Settlements Programme (UN-HABITAT) 1997-2000, 2009-2012, 2016-2020
○Commission on the Limits of the Continental Shelf(CLCS) 1997-2012, 2012-2017, 2017-2023
○UN Commission on International Trade Law(UNCITRAL) 2004-2007, 2008-2013, 2019-2025
○International Law Commission (ILC) 2002-2006, 2012-2016, 2017-2022, 2023-2027
○International Criminal Tribunal for the Former Yugoslavia (ICTY) Judge O-gon Kwon 2001-2005, 2005-2012, 2012-2016
○International Criminal Tribunal for Rwanda (ICTR) Judge Seon-ki Park 2004-2012
○International Tribunal for the Law of the Sea (ITLOS) Judge Jin-hyun Paik 2009-2014, 2014-2023 (President 2017-2020)
○International Residual Mechanism for Criminal Tribunals (IRMCT) Judge Seon-ki Park 2011-2014, 2016-2020
○Extraordinary Chambers in the Court of Cambodia (ECCC) Judge Kang Jin Baik 2015-
●Governing Bodies of Special Agencies
○International Labour Organization (ILO) 1996-2005, 2005-2014, 2014-2017, 2017-2020
○Food and Agriculture Organization(FAO) 1965-1967, 1989-12, 2012-2018
○United Nations Educational, Scientific and Cultural Organization (UNESCO) 1987-2003, 2007-2011, 2011-2015, 2015-2019, 2019-2023
○International Civil Aviation Organizational (ICAO) 2001-2010, 2010-2013, 2013-2016, 2016-2019, 2019-2022, 2022-2025
○International Maritime Organization (IMO) 1991-2023
○International Telecommunication Union (ITU) 1989-2010, 2010-2014
○Universal Postal Union (UPU) 1990-2020
○World Meteorological Organization (WMO) 2000, 2007-2011, 2011-2015, 2015-2019
○World Intellectual Property Organization (WIPO) 1987-
○International Fund for Agricultural Development (IFAD) 2008-2011
○UN Industrial Development Organization (UNIDO) 1995-2003
○Industrial Development Board 1998-2007, 2011-2012
○Programme and Budget Committee 1994-1997, 2003-2005
○World Health Organization (WHO) 1960-1963, 1984-1987, 1995-1998, 2001-2004, 2007-2012, 2013-2017, 2020-2023
○World Tourism Organization (WTO) 1980-1983, 1992-1995, 2004-2007, 2008-2011, 2012-2015, 2015-2019
●Other Organizations
○International Atomic Energy Agency (IAEA) 1957-1959,1965-1967, 1973-1975, 1977-1979, 1981-1983, 1985-1989, 1991-1993, 1995-2001, 2003-2007, 2009-2011, 2011-2013, 2015-2017, 2017-2019
○Organization for the Prohibition of Chemical Weapons (OPCW) 1997-2011, 2011-2013, 2013-2015
○International Seabed Authority (ISA) 1996-1998, 1999-2001, 2002-2004, 2005-2010, 2011-2014, 2015-2018, 2019-2022, 2023-2026
○International Telecommunications Satellite Organization (INTELSAT) 1995-
○International Criminal Court (ICC) - Judge Sang-hyun Song 2003-2006, 2006-2015 ; Judge Chang-ho Chung 2015-2024 ; ASP President O-gon Kwon 2017-2020