Secretariat of the United Nations

United Nations - Secretariat
Kofi A. Annan (Ghana), Secretary-General (1997 - 2006)

     United Nations Office Geneva (UNOG)
     Sergei Ordzhonikidze (Russian Federation), Director-General (2002 - ) 

     United Nations Office Vienna (UNOV)
     Antonio Maria Costa (Italy), Director-General (2002 - )

     United Nations Office Nairobi (UNON) 
     

     Office of Internal Oversight Services (OIOS)
     Inga-Britt Ahlenius (Sweden), Under-Secretary-General (2005 - )

     Office of Legal Affairs (OLA)
     Nicolas Michel (Switzerland), Under-Secretary-General, Legal Counsel (2004 - )

     Department of Political Affairs (DPA)
     Ibrahim A. Gambari (Nigeria), Under-Secretary-General (2005 - )

      Department for Disarmament Affairs (DDA)
     Nobuyasu Abe (Japan), Under-Secretary-General (2003 -)

     Department of Peacekeeping Operations (DPKO)
     Jean-Marie Guéhenno (France), Under-Secretary-General (2000 -)

     Office for the Coordination of Humanitarian Affairs (OCHA)
     Jan Egeland (Norway), Under-Secretary-General for Humanitarian Affairs and Emergency Relief Coordinator (2003 - )

     Department of Economic and Social Affairs (DESA)
     José Antonio Ocampo (Colombia), Under-Secretary-General (2003 -)

     Department for General Assembly and Conference Management (DGAACS)
     Chen Jian (China), Under-Secretary-General (2001 - )

     Department of Public Information (DPI)
     Shashi Tharoor (India), Under-Secretary-General (2002 - )

     Department of Management (DM)
     Christopher Bancroft Burnham (United States of America), Under-Secretary-General (2005 - )     

Regional Commissions

Economic Commission for Africa (ECA)
Abdoulie Janneh (Gambia), Executive Secretary (2005 - )

Economic Commission for Europe (ECE)
Marek Belka (Poland), Executive Secretary (2005 - )

Economic Commission for Latin America and the Caribbean (ECLAC)
José Luis Machinea (Argentina), Executive Secretary (2003 - )

Economic and Social Commission for Asia and the Pacific (ESCAP)
Kim Hak-Su (Republic of Korea), Executive Secretary (2000 - )

Economic and Social Commission for Western Asia (ESCWA)
Mervat M. Tallawy (Egypt), Executive Secretary (2000 - )

Programmes and Funds

United Nations Conference on Trade and Development (UNCTAD)
Supachai Panitchpakdi (Thailand), Secretary-General (2005 - )

United Nations Conference on Trade and Development UNCTAD/WTO (ITC)
Carlos Fortin, Officer in Charge and Deputy Secretary-General

United Nations Office for Drugs and Crime (UNODC)
Antonio Maria Costa (Italy), Executive Director (2002 - )

United Nations Environment Programme (UNEP)
Achim Steiner (Germany), Executive Director (2006 - )

United Nations Development Programme (UNDP)
Kemal Dervis (Turkey), Administrator (2005 - )

United Nations Development Fund for Women (UNIFEM)
Noeleen Heyzer (Singapur), Executive Director (1994 - )

United Nations Volunteers (UNV)
Ad de Raad (Netherlands), Executive Coordinator (2004 - )

United Nations Population Fund (UNFPA)
Thoraya Obaid (Saudi Arabia), Executive Director (2001 - )

Office of the United Nations High Commissioner for Refugees (UNHCR)
António Manuel de Oliveira Guterres (Portugal), High Commissioner (2005 - )

United Nations Children's Fund (UNICEF)
Ann M. Veneman (United States of America), Executive Director  (2005 - )

World Food Programme (WFP)
James T. Morris (United States of America), Executive Director (2002 - )

United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA)
Karen Koning Zbuzayd (United States of America), Commissioner-General (2005 - )

Office of the United Nations High Commissioner for Refugees (OHCHR)
Louise Arbout (Canada), High Commissioner (2004 - )

United Nations Human Settlement Proramme (UN-Habitat)
Anna Kajumulo Tibaijuka (Tanzania), Under-Secretary-General, Executive Director (2000 - )

United Nations Office for Project Services (UNOPS)
Nigel Fisher (Canada), Executive Director (2003 - )

United Nations University (UNU)
Prof. Hans van Ginkel (Netherlands), Rector (1997 - )

United Nations International Research and Training Institute for the Advancement of Women (INSTRAW)
Carmen Moreno (Mexico), Director (2003 - )

UN Interregional Crime and Justice Research Institute (UNICRI)
Alberto Bradanini (Italy), Director

United Nations Institute for Training and Research (UNITAR)
Marcel A. Boisard (Switzerland), Executive Director, UN Assistant Secretary-General

United Nations Research Institute for Social Development (UNRISD)
Thandika Mkandawire (Sweden), Director (1998 - )

United Nations Institute for Disarmament Research (UNIDIR)
Dr. Patrica Lewis (United Kingdom), Director

Specialized Agencies and Related Organizations

International Labour Organization (ILO)
Juan Somavía (Chile), Director-General (1999 - )

Food and Agriculture Organization of the United Nations (FAO)
Jacques Diouf (Senegal), Director-General (1994 - )

United Nations Educational, Scientific and Cultural Organization (UNESCO)
Koichiro Matsuura (Japan), Director-General (1999 - )

World Health Organization (WHO) 
Dr. Anders Nordström, Acting Director-General (2006 - )

The World Bank Group
Paul Wolfowitz (United States of America), President (2005 - )

International Monetary Fund (IMF)
Rodrigo Rato (Spain), Managing Director (2004 - )

International Civil Aviation Organization (ICAO)
Assad Kotaite (Lebanon), President of the Council (1976 - )
Taieb Cherif (Algeria), Secretary-General (2003 - )

International Maritime Organization (IMO)
Efthimios Mitropoulos (Greece), Secretary-General (2004 - )

International Telecommunication Union (ITU)
Yoshio Utsumi (Japan), Secretary-General (1999 - )

Universal Postal Union (UPU)
Thomas E. Leavey (United States of America), Director-General

World Meterological Organization (WMO)
Michel Jarraud (France), Secretary-General (2004 - )

World Intellectual Property Organization (WIPO)
Kamil Idris (Sudan), Director-General (1997 - )

International Fund for Agriculture (IFAD)
Lennart Båge (Sweden), President (2001 - )

United Nations Industrial Development Organization (UNIDO) 
Kandeh Yumkella (Argentina), Director-General (1997 - )

InternationalAtomic Energy Agency (IAEA)
Mohamed ElBaradei (Egypt), Director-General (1997 - )

Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO)
Wolfgang Hoffmann (Germany), Executive Secretary

Organization for the Prohibition of Chemical Weapons (OPCW)
Rogelio Pfirter (Sierra Leone), Director-General (2005 - )

World Tourism Organization (UNWTO)
Francesco Frangialli (France), Secretary-General

World Trade Organization (WTO)
Pascal Lamy, Director-General (2005 - )

(Juner 2006)