| Abbreviation | Definition |
|---|---|
| GREP | Global Rinderpest Eradication Programme |
| GRMP | Garbage and Recycling Master Plan |
| GRN | Global Recycling Network |
| GROC | Grounds Recycling Operations Center |
| GRWTAC | Groundwater Remediation Technologies Analysis Center |
| GSC | Grey Sauble Conservation (Authority) [Ontario, Canada] |
| GSDA | Groundwater surveys & development Agency |
| GTAG | Greenbelt Transportation Advisory Group |
| GUESS | Green Universe Environmental Services Society |
| GV | Green Vehicle |
| GW | Ground Water |
| GWAC | Global Warming Action Coalition |
| GWAC | Ground Water Advisory Committee |
| GWART | Global Warming A Reduced Threat |
| GWC | GroundWater Contamination |
| GWCI | Ground Water Canal Irrigation |
| GWCP | General Waterway Construction Permit |
| GWCP | GroundWater Contamination Potential |
| GWD | Ground for Waste Disinfection |
| GWEI | Genome Wide Environmental Interaction |