| Abbreviation | Definition |
|---|---|
| GCF | Giraffe Conservation Foundation |
| GCL | Genesee Conservation League |
| GDCP | Grenada Dove Conservation Programme |
| GDNC | Gauteng Directorate Nature Conservation |
| GEFMP | Goulburn Eildon Fisheries Management Plan |
| GLCC | Great Lakes Conservation Corps |
| GLCP | Georgia Land Conservation Program |
| GMCD | Green Mountain Conservation District |
| GMI | Grow Me Instead |
| GMRR | Galapagos Marine Resources Reserve |
| GPCA | Georgia Plant Conservation Alliance |
| GRACE | Gorilla Rehabilitation and Conservation Education |
| GRCA | Grand River Conservation Authority |
| GRCP | Genetic Resources Conservation Program |
| GSPC | Global Strategy for Plant Conservation |
| GSWC | Ground and Surface Water Conservation |
| GSWCC | Georgia Soil and Water Conservation Commission |
| GSWCC | Georgia Soil Water Conservation Commission |
| GWC | Global Wildlife Conservation |
| GWCG | Grafham Wildlife and Conservation Group |