| Category | Full Name of Organisation | Headquarters | Core Function / Purpose |
| UN Funds and Programmes | United Nations Development Programme | New York, USA | Works in almost 170 countries on poverty reduction, inequality and Sustainable Development Goals. |
| United Nations Environment Programme | Nairobi, Kenya | UN authority for environmental protection and sustainable resource use. |
| United Nations Population Fund | New York, USA | Focuses on reproductive health, safe childbirth and youth development. |
| United Nations Human Settlements Programme | Nairobi, Kenya | Supports sustainable urban development and decent shelter for all. |
| United Nations Children’s Fund | New York, USA | Promotes child rights, education, nutrition and development worldwide. |
| World Food Programme | Rome, Italy | Global humanitarian agency working to end hunger and malnutrition. |
| UN Specialized Agencies | Food and Agriculture Organization | Rome, Italy | Leads global effort to fight hunger and promote food security. |
| International Civil Aviation Organization | Montreal, Canada | Develops aviation safety rules and assists member states. |
| International Fund for Agricultural Development | Rome, Italy | Works on rural poverty reduction and agricultural development. |
| International Labour Organization | Geneva, Switzerland | Sets labour standards and promotes decent work and worker rights. |
| International Monetary Fund | Washington, DC, USA | Provides financial stability support, loans and economic surveillance. |
| International Maritime Organization | London, United Kingdom | Regulates international shipping safety, security and environmental standards. |
| International Telecommunication Union | Geneva, Switzerland | UN agency for communication technologies and global telecom cooperation. |
| United Nations Educational, Scientific and Cultural Organization | Paris, France | Works on education, culture, heritage protection and science development. |
| United Nations Industrial Development Organization | Vienna, Austria | Promotes industry, inclusive growth and sustainable development. |
| World Tourism Organization | Madrid, Spain | UN agency for global tourism policy and sustainable tourism promotion. |
| Universal Postal Union | Bern, Switzerland | Manages international postal cooperation and delivery standards. |
| World Health Organization | Geneva, Switzerland | Global authority for public health, health norms and disease control. |
| World Intellectual Property Organization | Geneva, Switzerland | Oversees international cooperation on intellectual property rights. |
| World Meteorological Organization | Geneva, Switzerland | Coordinates global weather, climate, and atmospheric data exchange. |
| World Bank Group | Washington, DC, USA | Provides development finance, loans and grants for poverty reduction. |
| Other UN Entities | Joint United Nations Programme on HIV/AIDS | Geneva, Switzerland | Leads global efforts to end AIDS by 2030. |
| United Nations High Commissioner for Refugees | Geneva, Switzerland | Protects refugees and supports resettlement and humanitarian relief. |
| United Nations Institute for Disarmament Research | Geneva, Switzerland | Researches disarmament, arms control and global peace studies. |
| United Nations Institute for Training and Research | Geneva, Switzerland | Training institute developing governance and diplomatic skills. |
| United Nations Office for Project Services | Copenhagen, Denmark | Implements development projects and infrastructure services. |
| United Nations Relief and Works Agency for Palestine Refugees in the Near East | Amman, Jordan | Provides education, healthcare and relief to Palestine refugees. |
| United Nations System Staff College | Turin, Italy | Delivers leadership and management training for UN staff. |
| United Nations University | Tokyo, Japan | Global research think tank supporting UN policy development. |
| United Nations Entity for Gender Equality and the Empowerment of Women (UN Women) | New York, USA | Works on gender equality and women empowerment. |
| Related International Organisations | Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization | Vienna, Austria | Promotes nuclear test-ban treaty implementation and verification. |
| International Atomic Energy Agency | Vienna, Austria | Promotes safe, secure and peaceful use of nuclear technology. |
| International Criminal Court | The Hague, Netherlands | Tries individuals for genocide, war crimes and crimes against humanity. |
| International Organization for Migration | Geneva, Switzerland | Supports cooperation on migration and humanitarian assistance to migrants. |
| Organisation for the Prohibition of Chemical Weapons | The Hague, Netherlands | Implements Chemical Weapons Convention and ensures disarmament compliance. |
| United Nations Framework Convention on Climate Change Secretariat | Bonn, Germany | Coordinates global climate treaties and negotiations including Paris Agreement. |
| World Trade Organization | Geneva, Switzerland | Forum for negotiating trade rules and resolving trade disputes. |
| International Trade Centre | Geneva, Switzerland | Joint UN-WTO agency supporting internationalisation of small and medium enterprises. |