| Abbreviation | Definition |
|---|---|
| GOHS | Greater Ozarks Hosta Society |
| GOR | German Operations Research Society |
| GOR | Gesellschaft fr Operations Research |
| GOR | Gesellschaft für Operations Research |
| GOS | Georgia Ornithological Society |
| GPAS | Greece Performing Arts Society |
| GPES | Global Politics Economy and Society |
| GPFS | Greater Portland Flute Society |
| GPFS | Greater Portland Flute Society's |
| GPLS | Government Politics Legal Society |
| GPPS | Greater Philadelphia Pain Society |
| GPSO | Greater Philadelphia Society of Orthodontists |
| GQS | Golden Quill Society |
| GRBS | Gardeners Royal Benevolent Society |
| GRCS | Great Rivers Choral Society |
| GRCS | Guyana Red Cross Society |
| GREATS | Greater Rochester Eating And Tandem Society |
| GRITS | Gulf Region Intelligent Transportation Society |
| GRPS | Greater Rochester Perennial Society |
| GRSS | Geoscience and Remote Sensing Society |