Sum of FY 2019 Obligations Contributions by Agency and Recipient (U.S. dollars) Environmental Protection Agency 11,386,000 Commission for Environmental Cooperation 2,600,000 International Energy Agency (IEA) 300,000 Multilateral Fund for the Implementation of the Montreal Protocol (MLF) 8,326,000 United Nations Environment Programme (UNEP) 100,000 World Health Organization (WHO) 60,000 National Academy of Sciences 708,231 Committee on Data for Science and Technology (CODATA) 67,620 Committee on Space Research (COSPAR) 26,692 International Arctic Science Committee (IASC) 2,297 International Astronomical Union (IAU) 159,077 International Commission for Optics (ICO) 5,963 International Council for Laboratory Animal Science (ICLAS) 3,621 International Lithosphere Program (ILP) 8,000 International Mathematical Union (IMU) 19,738 International Union for Radio Science (URSI) 39,466 International Union of Applied Physics (IUPAP) 48,875 International Union of Geodesy and Geophysics (IUGG) 69,125 International Union of Geological Sciences (IUGS) 43,540 International Union of Pure and Applied Chemistry (IUPAC) 118,998 International Union of Soil Science (IUSS) 46,500 International Union of Theoretical and Applied Mechanics (IUTAM) 9,720 Pacific Science Association (PSA) 14,000 Scientific Committee on Solar-Terrestrial Physics (SCOSTEP) 25,000 National Archives and Records Administration 56,210 International Council on Archives (ICA) 56,210 National Endowment for the Arts 50,000 International Federation of Arts Councils and Culture Agencies (IFACCA) 50,000 National Science Foundation 7,366,269 Council of Managers of National Antarctic Programs (COMNAP) 5,579 Human Frontier Science Program (HFSP) 2,895,750 Inter-American Institute for Global Change Research (IAI) 1,222,000 International Institute for Applied Systems Analysis (IIASA) 2,512,940 International Science Council (ISC) 730,000 U.S. Agency for International Development 4,906,336,645 Common Market for East and Southern Africa (COMESA) 13,888,151 Food and Agriculture Organization (FAO) 151,019,753 Global Fund to Fight AIDS, Tuberculosis, and Malaria (Global Fund) 849,353,924 Intergovernmental Authority on Development (IGAD) 4,448,360 International Commission on Missing Persons (ICMP) 89,000 International Committee of the Red Cross (ICRC) 2,000,000 International Criminal Police Organization (INTERPOL) 2,300,000 International Development Law Organization (IDLO) 900,000 International Federation of Red Cross and Red Crescent Societies (IFRC) 36,215,419 International Fertilizer Development Center (IFDC) 9,549,838 International Maize and Wheat Improvement Center (CIMMYT) 3,960,956 International Organization for Migration (IOM) 236,594,575 Page 1 of 6 International Union for Conservation of Nature (IUCN) 3,866,409 Joint United Nations Programme on HIV/AIDS (UNAIDS) 70,144,798 Office of the United Nations High Commissioner for Refugees (UNHCR) 1,000,000 Organisation for Economic Co-operation and Development (OECD) 1,800,056 Organization for Security and Co-operation in Europe (OSCE) 444,574 Organization of American States (OAS) 5,897,859 Pacific Community (SPC) 14,000,000 Pan American Health Organization (PAHO) 18,649,264 Permanent Interstate Committee for Drought Control in the Sahel (CILSS) 1,500,000 United Nations (UN) 3,940,966 United Nations Children's Fund (UNICEF) 316,248,285 United Nations Conference on Trade and Development (UNCTAD) 769,000 United Nations Development Programme (UNDP) 181,531,890 United Nations Entity for Gender Equality and the Empowerment of Women (UN Women) 300,000 United Nations Environment Programme (UNEP) 1,750,000 United Nations Human Settlement Program (UN-Habitat) 9,056,000 United Nations Office for Disaster Risk Reduction (UNISDR) 1,235,090 United Nations Office for Project Services (UNOPS) 78,952,119 United Nations Office for the Coordination of Humanitarian Affairs (OCHA) 79,527,457 United Nations Office on Drugs and Crime (UNODC) 3,156,169 World Food Program (WFP) 2,591,041,049 World Health Organization (WHO) 208,505,683 World Meteorological Organization (WMO) 2,700,000 U.S. Commodity Futures Trading Commission 54,975 International Organization of Securities Commissions (IOSCO) 54,975 U.S. Department of Agriculture 1,132,916 International Atomic Energy Agency (IAEA) 552,916 North American Plant Protection Organization (NAPPO) 580,000 U.S. Department of Commerce 64,215 Asia Pacific Laboratory Accreditation Cooperation (APLAC) 16,016 Asia Pacific Metrology Programme (APMP) 12,000 Inter-American Accreditation Cooperation (IAAC) 10,257 International Laboratory Accreditation Cooperation 10,942 North Pacific Marine Science Organization (PICES) 15,000 U.S. Department of Defense 565,519,552 North Atlantic Treaty Organization (NATO) 565,519,552 U.S. Department of Education 4,835,563 Organisation for Economic Co-operation and Development (OECD) 4,835,563 U.S. Department of Energy 21,282,391 International Atomic Energy Agency (IAEA) 18,925,000 International Energy Agency (IEA) 1,099,869 International Energy Agency Carbon Capture, Utilization and Storage (CCUS) 250,000 International Energy Forum Secretariat (IEFS) 286,260 Nuclear Energy Agency (NEA) 68,601 Organisation for Economic Co-operation and Development (OECD) 279,800 World Customs Organization (WCO) 372,861 U.S. Department of Health and Human Services 111,939,271 African Union (AU) 250,000 International Federation of Red Cross and Red Crescent Societies (IFRC) 6,602,717 World Health Organization (WHO) 104,886,554 Page 2 of 6 World Trade Organization (WTO) 200,000 U.S. Department of Homeland Security 359,902 International Maritime Organization (IMO) 359,902 U.S. Department of Interior 797,798 International Union for Conservation of Nature (IUCN) 70,198 United Nations Development Programme (UNDP) 725,000 World Water Council 2,600 U.S. Department of Justice 13,124,107 Asia Pacific Group on Money Laundering (APG) 124,000 Financial Action Task Force (FATF) 475,000 International Criminal Police Organization (INTERPOL) 12,525,107 U.S. Department of Labor 13,650,000 International Labour Organization (ILO) 13,650,000 U.S. Department of State 6,372,150,737 African Union (AU) 500,000 African Union Mission in Somalia (AMISOM) 12,000,000 Antarctic Treaty Secretariat (ATS) 60,372 Arctic Council Secretariat (ACS) 89,583 Arms Trade Treaty (ATT) 124,525 Asia-Pacific Economic Cooperation (APEC) 2,225,000 Biological Weapons Convention (BWC) 266,503 Bureau of International Expositions (BIE) 100,000 Colombo Plan (CP) 16,240,907 Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) 108,109 Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) 45,561,437 Convention on Certain Conventional Weapons (CCW) 178,412 Convention on the Conservation of Migratory Species of Wild Animals (CMS) 140,000 Convention on the International Trade in Endangered Species of Wild Fauna and Flora (CITES) 1,423,125 Council of Europe (CoE) 768,320 Food and Agriculture Organization (FAO) 100,978,137 Global Climate Observing System (GCOS) 76,500 Great Lakes Fishery Commission (GLFC) 37,320,000 Hague Conference on Private International Law (HCCH) 265,000 Inter-American Convention for the Protection and Conservation of Sea Turtles (IAC) 100,000 Inter-American Institute for Cooperation on Agriculture (IICA) 17,426,020 Inter-American Tropical Tuna Commission (IATTC) 1,750,000 Intergovernmental Panel on Climate Change (IPCC) 340,000 International Agency for Research on Cancer (IARC) 2,100,000 International Atomic Energy Agency (IAEA) 180,377,963 International Bureau of the Permanent Court of Arbitration (IBPCA) 70,000 International Bureau of Weights and Measures (IBWM) 1,305,100 International Center for the Study of Preservation and Restoration of Cultural Property (ICCROM) 1,000,000 International Civil Aviation Organization (ICAO) 15,018,211 International Commission for the Conservation of Atlantic Tunas (ICCAT) 414,260 International Committee of the Red Cross (ICRC) 471,738,000 International Cooper Study Group (ICSG) 32,000 International Cotton Advisory Committee (ICAC) 275,000 International Council for the Exploration of the Sea (ICES) 251,736 International Criminal Police Organization (INTERPOL) 2,567,500 International Development Law Organization (IDLO) 18,841,696 Page 3 of 6 International Energy Agency (IEA) 1,975,000 International Federation of Red Cross and Red Crescent Societies (IFRC) 1,850,000 International Grains Council (IGC) 435,000 International Hydrographic Organization (IHO) 116,000 International Impartial and Independent Mechanism for Syria Accountability (IIIM) 2,000,000 International Institute for Justice and the Rule of Law (IIJ) 1,727,993 International Institute for the Unification of Private Law (UNIDROIT) 160,000 International Labour Organization (ILO) 82,682,510 International Lead and Zinc Study Group (ILZSG) 40,000 International Maritime Organization (IMO) 1,296,250 International Organization for Migration (IOM) 335,577,526 International Organization of Legal Metrology (OIML) 130,000 International Pacific Halibut Commission (IPHC) 4,395,000 International Renewable Energy Agency (IRENA) 4,334,766 International Residual Mechanism for Criminal Tribunals (IRMCT) 37,748,950 International Seed Testing Association (ISTA) 11,500 International Telecommunication Union (ITU) 8,560,000 International Tropical Timber Organization (ITTO) 779,249 International Union for Conservation of Nature (IUCN) 1,278,673 International Union for the Protection of New Varieties of Plants (UPOV) 290,000 International Whaling Commission