GGAS
| Acronym | Definition |
|---|---|
| GGAS | Greenhouse Gas Abatement Scheme (Australia) |
| GGAS | Great Georgia Air Show (Peachtree City, GA) |
| GGAS | Golden Gate Audubon Society (Berkeley, CA) |
| GGAS | Gilmore, Gannaway, Andrews, Smith and Co., LLC (accounting firm; Roswell, NM) |