| Abbreviation | Definition |
|---|---|
| GEM | Geotechnical Environmental And Materials |
| GEM | Global Environmental Multiscale |
| GEMS | Geographic Environmental Modeling System |
| GEMS | Geospatial Environmental Modeling Software |
| GENESIS | Genetic Environmental Nature of Emotional States In Siblings |
| GENESIS | The Genetic Environmental Nature Of Emotional States In Siblings |
| GEO | Global Ecosystem Organization |
| GEO | Global Environment Organisation |
| GEOAS | Global Employee Opinion Action Survey |
| GEORGE | Global Environmental Organisation Regarding Greenhouse Emissions |
| GEP | Geosciences and Environment Protection |
| GEP | Global Environmental Policy |
| GEP | Group on Environmental Performance |
| GEPC | Geo Environmental Protection Center |
| GERI | Global Environmental Resources Inc |
| GERT | Gas Emission Reduction Trading |
| GERW | George, Washington, AgriMet Station, Bureau of Reclamation |
| GES | Geography and Environmental Science |
| GES | Geography and Environmental Systems |
| GES | Geography Environmental Sciences |