The Academic Council of the United Nations (ACUNS) is a global professional association of educational and research institutions, individual scholars, and practitioners active in the work and study of multilateral relations, global governance, and international cooperation. Almost half of its membership is based in North America, Europe and Central Asia; but their global membership comes from 54 countries. Its 600 individual and institutional members include scholars, UN and other international organization practitioners, NGO/civil society representatives, government officials, and interested individuals.

The International Atomic Energy Agency (IAEA) is an international organization that seeks to promote the peaceful use of nuclear energy, and to inhibit its use for any military purpose, including nuclear weapons. The IAEA was established as an autonomous organization in 1957. Although independent of direct United Nations control, the IAEA reports to both the UN General Assembly and Security Council.

The International Civil Aviation Organization (ICAO), a specialized agency of the United Nations, codifies the principles and techniques of international air navigation and fosters the planning and development of international air transport to ensure safe and orderly growth. Its headquarters are located in the Quartier International of Montreal, Quebec, Canada.

The International Criminal Court (ICC or ICCT) is a permanent tribunal to prosecute individuals for genocide, crimes against humanity, war crimes, and other crimes of aggression.

Blue variant in use.

The International Criminal Court uses the United Nations blue flag with the white wreath design, but replaces the world globe with the scales of justice at its center. There are two variants of this flag in use which use either a white or blue background with lines added on either sides of the wreath.

July 17 has been named as the Day of International Criminal Justice. Events commemorating July 17 are aimed at raising awareness and generating support for global justice and the fight against impunity. The day is a celebration of the landmark steps that the international community is taking to reach to the common goal of global justice. The date was adopted by the Assembly of the States Parties during the Review Conference of the Rome Statute held in Kampala (Uganda) last year in June and marks the anniversary of the adoption of the Rome Statute, the founding treaty of the International Criminal Court (ICC).

The International Fund for Agricultural Development (IFAD), a specialized agency of the United Nations, was established as an international financial institution in 1977. It was one of the major outcomes of the 1974 World Food Conference.

The International Finance Corporation, a member of the World Bank Group, is the largest global development institution focused on the private sector in developing countries. "We create opportunity for people to escape poverty and improve their lives. We do so by providing financing to help businesses employ more people and supply essential services, by mobilizing capital from others, and by delivering advisory services to ensure sustainable development."

The International Labor Organization (ILO) is the specialized agency of the United Nations that deals with labor issues. Its headquarters are in Geneva, Switzerland. Its administration, and the people who are employed by it throughout the world, are known as the International Labor Office. The organization received the Nobel Peace Prize in 1969.

The International Maritime Organization (IMO), formerly known as the Inter-Governmental Maritime Consultative Organization (IMCO), was established in Geneva in 1948, but didn't begin for ten years, meeting for the first time in 1959. The IMCO name was changed to IMO in 1982.

The International Telecommunication Union (ITU) is an agency of the United Nations which regulates information and communication technology issues. The ITU has coordinated the global use of the communications system, promoted international cooperation in assigning satellite orbits, worked to improve the telecommunication infrastructure, established worldwide standards for communications systems, and addressed the issue of strengthening cyber security.

The Organization of World Heritage Cities (Organisation des villes du patrimoine mondial), headquartered in Québec, Canada, has a flag of its own. The Organization of World Heritage Cities (OWHC) was founded in 1993 in Fez, Morocco.

The European International Model United Nations (TEIMUN Foundation) is a student organization which aims to educate students about the United Nations. The foundation organizes several conferences and participates in several other conferences and workshops to meet this goal. The highlight every year is the annual TEIMUN conference, which takes place every July. This year it will be held from the 11th till the 17th of July 2011 in The Hague, The Netherlands. TEIMUN gives students the opportunity to experience the working and decision-making process of the United Nations and NATO through role-playing in one of the organs simulated, helping participants to gain a multi-cultural view of world affairs and to develop public speaking and debating skills.

The United Nations Commission for Social Development (UNCSD) is one of the ten functional commissions established by the United Nations Economic and Social Council (ECOSOC) since 1946 to advise and assist ECOSOC in its work. The Commission for Social Development consists of 46 members elected by ECOSOC.

The UN Development Program (UNDP), or "United Nations Development Programme," is headquartered in New York City at the UN headquarters building and is entirely funded by voluntary contributions from member nations. The UNDP operates in 166 countries, working with nations on their own solutions to global and national development challenges. As they develop local capacity, they draw on the people of UNDP and its wide range of partners. The UNDP provides expert advice, training, and grant support to these developing countries, with increasing emphasis on assistance to the least developed countries. The UNDP focuses on poverty reduction, HIV/AIDS, democratic governance, energy and environment, social development, and crisis prevention and recovery. UNDP also encourages the protection of human rights and the empowerment of women in all of its programs.

Its flag has a UN blue field with its logo centered horizontally on the flag.

The United Nations Environment Program (UNEP) coordinates United Nations environmental activities, assisting developing countries in implementing environmentally sound policies and practices. It was founded as a result of the United Nations Conference on the Human Environment in 1972 and has its headquarters in Nairobi, Kenya. UNEP also has six regional offices and various country offices.

The United Nations Educational, Scientific and Cultural Organization (UNESCO) is a specialized agency of the United Nations established in 1945. Its stated purpose is to contribute to peace and security by promoting international collaboration through education, science, and culture in order to further universal respect for justice, the rule of law, and the human rights along with fundamental freedoms proclaimed in the UN Charter.

A UNESCO World Heritage Site is a place (such as a forest, mountain, lake, desert, monument, building, complex, or city) that has been chosen by the UNESCO as of "special cultural or physical significance." The list is maintained by the International World Heritage Programme, which is part of the UNESCO World Heritage Committee, members of which are elected by the the UN General Assembly.

This is the flag of the Office of the United Nations High Commissioner for Refugees (UNHCR) which was established in 1950 as a United Nations agency mandated to protect and support refugees at the request of a government or the UN itself and assists in their voluntary repatriation, local integration or resettlement to a third country. Its headquarters are in Geneva, Switzerland.

The United Nations International Children's Fund (UNICEF) was created by the United Nations General Assembly in 1946, to provide emergency food and health care to children in countries that had been devastated by World War II. In 1953, UNICEF became a permanent part of the United Nations System and its name was shortened from the original United Nations International Children's Emergency Fund, but it has continued to be known by the popular acronym based on its old name. Headquartered in New York City, UNICEF provides long-term humanitarian and developmental assistance to children and mothers in developing countries.

The United Nations Industrial Development Organization (UNIDO), is a specialized agency of the United Nations headquartered in Vienna, Austria. The Organization's primary objective is the promotion and acceleration of industrial development in developing countries and countries with economies in transition and the promotion of international industrial cooperation.

Since 1979, the United Nations International Research and Training Institute for the Advancement of Women (UN-INSTRAW) has been the leading UN Institute devoted to research, capacity-development and knowledge management with the goal of achieving gender equality and women’s empowerment.

A United Nations Parliamentary Assembly, or United Nations People's Assembly (UNPA), is a proposed addition to the United Nations System that eventually would allow for direct election of UN Parliament members by citizens of all over the world. Proposals for a UNPA date back to the UN's formation in 1945, but largely stagnated until the 1990s. They have recently gained traction amidst increasing globalization, as national parliamentarians and citizens groups seek to counter the growing influence of un-elected international bureaucracies.

The United Nations Volunteers (UNV) program is the UN organization that promotes volunteerism to support peace and development worldwide. It is built around the theory that "volunteerism can transform the pace and nature of development, and it benefits both society at large and the individual volunteer. UNV contributes to peace and development by advocating for volunteerism globally, encouraging partners to integrate volunteerism into development programming, and mobilizing volunteers."

The Universal Postal Union (UPU) is an international organization that coordinates postal policies among member nations, and hence the worldwide postal system. Each member country agrees to the same set of terms for conducting international postal duties. The Universal Postal Union's headquarters are located in Berne, Switzerland.

World Bank is basically an international financial institution that provides loans to developing countries for capital programs. The World Bank has a stated goal of reducing poverty.

The World Food Program (WFP) is the food aid branch of the United Nations, and the world's largest humanitarian organization addressing hunger worldwide. The World Food Program provides food, on average, to 90 million people per year, 58 million of whom are children. From its headquarters in Rome and more than 80 country offices around the world, WFP works to help people who are unable to produce or obtain enough food for themselves and their families.

The World Health Organization (WHO) is a specialized agency of the United Nations that acts as a coordinating authority on international public health. Established in 1948, and headquartered in Geneva, Switzerland, the agency inherited the mandate and resources of its predecessor, the Health Organization, which had been an agency of the League of Nations.

The World Intellectual Property Organization (WIPO) is a specialized agency of the United Nations. It is dedicated to developing a balanced and accessible international intellectual property (IP) system, which rewards creativity, stimulates innovation and contributes to economic development while safeguarding the public interest. The predecessor to WIPO was the United International Bureaux for the Protection of Intellectual Property (BIRPI), which had been established in 1893 to administer the Berne Convention for the Protection of Literary and Artistic Works and the Paris Convention for the Protection of Industrial Property.

The World Meteorological Organization (WMO) is an intergovernmental organization with a membership of 189 Member States and Territories. It originated from the International Meteorological Organization (IMO), which was founded in 1873. Established in 1950, WMO became the specialized agency of the United Nations for meteorology (weather and climate), operational hydrology and related geophysical sciences. It has its headquarters in Geneva, Switzerland.