| AOGS | Asia Oceania Geosciences Society |
| AESE | Association of Earth Science Editors |
| EDS | European Desalination Society |
| EGEA | European Geography Association - for Students and Young Geographers |
| EGU | European Geosciences Union |
| FSE | European Speleological Federation |
| EWA | European Water Association |
| GEO | Group on Earth Observations |
| IAEG | International Association for Engineering Geology and the environment |
| IAMG | International Association for Mathematical Geosciences |
| IAPSO | International Association for the Physical Sciences of the Oceans |
| IADC | International Association of Drilling Contractors |
| IAGC | International Association of Geochemistry |
| IAG | International Association of Geodesy |
| IAGA | International Association of Geomagnetism and Aeronomy |
| IAG | International Association of Geomorphologists |
| IAH | International Association of Hydrogeologists |
| IAHS | International Association of Hydrological Sciences |
| IAMAS | International Association of Meteorology and Atmospheric Sciences |
| IAS | International Association of Sedimentologists |
| IASPEI | International Association of Seismology and Physics of the Earth's Interior |
| IAVCEI | International Association of Volcanology and Chemistry of the Earth's Interior |
| ICA | International Cartographic Association |
| IDA | International Desalination Association |
| IEA | International Energy Agency |
| FIG | International Federation of Surveyors |
| IGU | International Geographical Union |
| IGBP | International Geosphere-Biosphere Programme - Global Change |
| IGA | International Geothermal Association |
| IGS | International Glaciological Society |
| IHSS | International Humic Substances Society |
| IHO | International Hydrographic Organization |
| IMIA | International Map Industry Association |
| IOP | International Organisation of Palaeobotany |
| IRF | International Ranger Federation |
| ISEE | International Society for Environmental Epidemiology |
| ISRS | International Society for River Science |
| ISES | International Society of Exposure Science |
| ISPRS | International Society of Photogrammetry and Remote Sensing |
| IUCN | International Union for Conservation of Nature |
| INQUA | International Union for Quaternary Research |
| IUGG | International Union of Geodesy and Geophysics |
| IUGS | International Union of Geological Sciences |
| URSI | International Union of Radio Science |
| IUSS | International Union of Soil Science |
| UIS | International Union of Speleology |
| IWA | International Water Association |
| SCAR | Scientific Committee on Antarctic Research |
| UArctic | University of the Arctic |
| WMO | World Meteorological Organization |
