List of international organization leaders in 2004
2003 international organization leaders – Events of 2004 – 2005 international organization leaders – International organization leaders by year
- African, Caribbean and Pacific Group of States (ACP) –
- Secretary-General – Jean-Robert Goulongana, Gabon (2000–2005)
- African Development Bank –
- African Union –
- Andean Community –
- Antarctic Treaty
- Executive Secretary – Jan Huber, Netherlands (2004–present)
- Arab League –
- Arab Maghreb Union
- Asian Development Bank –
- Association of Southeast Asian Nations –
- Caribbean Community –
- Central American Parliament –
- Commonwealth of Nations –
- Commonwealth of Independent States
- Council of Europe
- East African Community –
- Economic Community of West African States
- European Bank for Reconstruction and Development
- President – Jean Lemierre, France (2000–present)
- European Free Trade Association
- Secretary-General – William Rossier, Switzerland (2000–2006)
- European Union
- Food and Agriculture Organization
- La Francophonie
- Gulf Cooperation Council
- Secretary-General – Abdul Rahman ibn Hamad al-Attiyah, Qatar (2002–present)
- Inter-American Development Bank
- International Atomic Energy Agency
- International Civil Aviation Organization
- International Court of Justice
- International Criminal Court
- International Criminal Police Organization
- International Labour Organization
- International Maritime Organization
- International Monetary Fund
- International Olympic Committee
- International Paralympic Committee
- International Telecommunication Union
- North Atlantic Treaty Organisation
- Organisation for Economic Co-operation and Development
- Organization for Security and Co-operation in Europe
- Organization of American States
- Organisation of Eastern Caribbean States
- Organisation of the Islamic Conference
- Organization of Petroleum Exporting Countries
- Pacific Community
- Director-General – Lourdes Pangelinan, Guam (2000–present)
- Pacific Islands Forum
- International Federation of Red Cross and Red Crescent Societies
- President – Juan Manuel Suárez del Toro Rivero, Spain (2001–present)
- International Committee of the Red Cross
- South Asian Association for Regional Cooperation
- Southern African Development Community
- Executive Secretary – Prega Ramsamy, Mauritius (2000–present)
- Southern Cone Common Market (Mercosur)
- Director of the Executive Secretariat – Reginaldo Braga Arcuri, Brazil (2003–2005)
- United Nations
- United Nations Children's Fund
- United Nations Educational, Scientific and Cultural Organization
- Universal Postal Union
- Western European Union
- World Bank
- World Health Organization
- World Trade Organization