- Geodetic and Geophysical Research Institute
- Geophysical Institute [Fairbanks]
- Geophysical Institute [Prague]
- Geophysical Research Division [Helsinki]
- GeophysicsHydro-Meteorological Service of Vietnam
- George Mason University [Fairfax]
- Georgia Institute of Technology [Atlanta]
- Géosciences Environnement Toulouse
- Géosciences Montpellier
- Géosciences Paris Saclay
- GEOSYS TOULOUSE
- GEOVAST BONDY
- German Aerospace Center
- German Remote Sensing Data Center
- German Research Centre for Geosciences - Helmholtz-Centre Potsdam
- German Space Operations Center
- Graduate School of Systems and Information Engineering [Tsukuba]
- Graduate School of the Chinese Academy of Sciences
- Graz University of Technology [Graz]
- Groupe de Météorologie à Moyenne Échelle
- Groupement de Recherche en Géodésie Spatiale
- GSFC Cryospheric Sciences Laboratory
- GSFC Laboratory for Extraterrestrial Physics