- GDF
- GEOGREEN
- GEOSTOCK
- GIER Schlumberger
- GIPSA - Systèmes linéaires et robustesse
- GIPSA - Systèmes non linéaires et complexité
- GIPSA - Vision and Brain Signal Processing
- GM Research & Development Centre
- GREENER
- GTT
- GTT Gaztransport & Technigaz
- GWS-Consulting
- Gasification, catalysis and CTL Research Group, CSIR - Central Institute of Mining and Fuel Research (Digwadih
- Gaz De France
- Gaz de France
- Gaz de France Suez
- General Motors Corporation
- General Motors Global Research & Development
- Gensym SA
- GeoForschungsZentrum - Helmholtz-Zentrum Potsdam
- GeoRessources
- Geogreen
- Geological Survey of Canada - Office
- Geological Survey of Denmark and Greenland
- Geomath
- Geoservices
- Geostock
- German Petroleum Institute
- German Research Centre for Geosciences - Helmholtz-Centre Potsdam
- Graduate Program in Energy, Federal University of Espirito Santo
- Grenoble Images Parole Signal Automatique
- Griffith University [Brisbane]
- Groupe de Recherche en Informatique, Image et Instrumentation de Caen
- Grupo de Investigacion Aplicada en Materiales y Procesos (GIAMP), School of Chemical Sciences and Engineering, Yachay Tech University
- Guangdong University of Petrochemical Technology
- Gubkin Russian State University
- Gubkin Russian State University of Oil and Gas
- Gubkin State Academy of Oil and Gas
- GéoHydrosystèmes COntinentaux
- Géologie et gestion des ressources minérales et énergétiques
- Géophysique expérimentale (IPGS)
- Géoressources & Environnement
- Géostock
- Géotechnique
- Gümüşhane University