| Abbreviation | Definition |
|---|---|
| GERCA | Gabinete de Energias Renovables de Canarias |
| GERG | Geochemical and Environmental Research Group |
| GERG | Groupe Europeen de Recherches de Gazieres |
| GERI | Global Environmental Resources Inc |
| GERJ | Golden Eagle Rail Journeys |
| GERL | Geo Energy Resources Ltd |
| GERP | General Employee Retraining Program |
| GERSA | Gastroenterology Research of San Antonio |
| GERT | Gemeias Extraordinary Radio Transmitters |
| GESC | Gateway Energy Services Corporation |
| GESC | Global Energy Supply Corporation |
| GESC | Green Engineering Solar Corp |
| GESG | Global Environment Systems Group |
| GESI | Global Emissions Systems Inc |
| GESI | Global Event Services Inc |
| GET | Green Earth Technologies |
| GETCO | Global Electronic Trading Company |
| GF | Grove Farm |
| GFA | Gesellschaft Fur Aerophysik, mbH |
| GFA | Gil Fried and Associates |