Global Governance and Diplomacy:
- UN: United Nations
- EU: European Union
- NATO: North Atlantic Treaty Organization
- OPEC: Organization of the Petroleum Exporting Countries
- ASEAN: Association of Southeast Asian Nations
- AU: African Union
- BRICS: Brazil, Russia, India, China, South Africa
- SCO: Shanghai Cooperation Organisation
- G20: Group of Twenty
- OECD: Organisation for Economic Co-operation and Development
- UNSC: United Nations Security Council
- ICJ: International Court of Justice
- ICC: International Criminal Court
Finance and Trade:
- IMF: International Monetary Fund
- World Bank: International Bank for Reconstruction and Development
- WTO: World Trade Organization
- IBRD: International Bank for Reconstruction and Development
- IFC: International Finance Corporation
- IDA: International Development Association
- MIGA: Multilateral Investment Guarantee Agency
- ADB: Asian Development Bank
- AfDB: African Development Bank
- EBRD: European Bank for Reconstruction and Development
- BIS: Bank for International Settlements
- FTA: Free Trade Agreement
Human Rights and Development:
- OHCHR: Office of the United Nations High Commissioner for Human Rights
- ILO: International Labour Organization
- UNHCR: United Nations High Commissioner for Refugees
- UNDP: United Nations Development Programme
- UNICEF: United Nations Children’s Fund
- WHO: World Health Organization
- UN Women: United Nations Entity for Gender Equality and the Empowerment of Women
- UNFPA: United Nations Population Fund
- WFP: World Food Programme
- UNESCO: United Nations Educational, Scientific and Cultural Organization
- FAO: Food and Agriculture Organization
Environment and Science:
- UNEP: United Nations Environment Programme
- IEA: International Energy Agency
- IPCC: Intergovernmental Panel on Climate Change
- ITLOS: International Tribunal for the Law of the Sea
- IUCN: International Union for Conservation of Nature
- CBD: Convention on Biological Diversity
- UNFCCC: United Nations Framework Convention on Climate Change
- WMO: World Meteorological Organization
- IAEA: International Atomic Energy Agency
- IMO: International Maritime Organization
Other Important Fields:
- IT: International Telecommunication Union (ITU), Internet Corporation for Assigned Names and Numbers (ICANN)
- Sports: FIFA (International Federation of Football Associations), IOC (International Olympic Committee)
- Aviation: ICAO (International Civil Aviation Organization), IATA (International Air Transport Association)
- Standardization: ISO (International Organization for Standardization), IEC (International Electrotechnical Commission)
- Space: NASA (National Aeronautics and Space Administration), ESA (European Space Agency)