| Adaptation Fund |
| African Development Bank (AfDB) |
| African Ministers’ Council on Water (AMCOW) |
| African Network of Basin Organizations (ANBO) |
| Alliance for Global Water Adaptation (AGWA) |
| Asian Development Bank (ADB) |
| Conference of Ibero-American Water Directors (CODIA) |
| Convention on Wetlands (Ramsar Convention) |
| Development Bank of Latin America (CAF) |
| Economic Community of Central African States (ECCAS) |
| Environment Agency Austria |
| European Commission |
| European Environment Agency (EEA) |
| European Investment Bank (EIB) |
| Executive Committee of the International Fund for Saving the Aral Sea (EC IFAS) |
| Food and Agriculture Organization of the United Nations (FAO) |
| Geneva Water Hub |
| German Agency for International Cooperation (GIZ) |
| Global Environment Facility and its International Waters Learning, Exchange and Resource Network (IW:LEARN) project |
| Global Water Partnership (GWP) |
| Green Climate Fund (GCF) |
| Green Cross International (GCI) |
| Intergovernmental Authority on Development (IGAD) |
| International Centre for Integrated Mountain Development (ICIMOD) |
| International Commission for the Congo-Oubangui-Sangha Basin (CICOS) |
| International Commission for the Protection of the Danube (ICPDR) |
| International Commission for the Protection of the Rhine (ICPR) |
| International Groundwater Resources Assessment Centre (IGRAC) |
| International Institute for Applied Systems Analysis (IIASA) |
| International Network of Basin Organizations (INBO) |
| International Office for Water (France) |
| International Sava River Basin Commission (ISRBC) |
| International Union for Conservation of Nature (IUCN) |
| Inter-American Development Bank (IADB) |
| International Water Management Institute (IWMI) |
| League of Arab States (LAS) |
| Mekong River Commission (MRC) |
| Niger Basin Authority (NBA) |
| Oregon State University (OSU) |
| Organisation for Economic Co-operation and Development (OECD) |
| Organization for Security and Cooperation in Europe (OSCE) |
| Organization of American States (OAS) |
| Regional Environmental Centre for Central Asia (CAREC) |
| Regional Environmental Center for Central and Eastern Europe (REC) |
| Royal Institute of Technology (KTH) |
| Sahara and Sahel Observatory (OSS) |
| Scientific-Information Center of the Interstate Commission for Water Coordination (SIC-ICWC) |
| Southern African Development Community (SADC) |
| Stockholm International Water Institute (SIWI) |
| The Chu-Talas Water Management Commission |
| The Commission on Sustainable Use and Protection of the Dniester River Basin |
| United Nations Economic Commission for Africa (UNECA) |
| United Nations Economic Commission for Latin America and the Caribbean (ECLAC) |
| United Nations Economic and Social Commission for Asia and Pacific (ESCAP) |
| United Nations Economic and Social Commission for Western Asia (ESCWA) |
| United Nations Development Programme (UNDP) |
| United Nations Educational, Scientific, and Cultural Organization (UNESCO) |
| United Nations Environment Programme (UNEP) |
| United Nations Framework Convention on Climate Change (UNFCCC) |
| United Nations Office for Disaster Risk Reduction (UNDRR) |
| United Nations Statistical Commission (UNSD) |
| United Nations University Institute for Integrated Management of Material Fluxes and of Resources (UNU-FLORES) |
| UN-Water |
| World Bank (WB) |
| World Health Organization (WHO) |
| World Meteorological Organization (WMO) |
| World Water Council |
| World Wide Fund for Nature (WWF) |
| Zoï Environment Network |