| Abbreviation | Definition |
|---|---|
| GRAG | Green Roof Advisory Group |
| GSAB | Green Space Advisory Board |
| GSBAC | Governor's Small Business Advisory Council |
| GTAB | Georgetown Transportation Advisory Board |
| GTAB | Gulf Talent Advisory Board |
| GTAG | Greenbelt Transportation Advisory Group |
| GUAC | Groundwater Users Advisory Council |
| HAA | HITRUST Assurance Advisories |
| HAB | Hanford Advisory Board |
| HAB | Housing Advisory Board |
| HAC | Heritage Advisory Committee |
| HAC | Historical Advisory Committee |
| HARS | Highway Advisory Radio System |
| HBAC | Harbor and Beaches Advisory Committee |
| HCAG | Historic Cornwall Advisory Group |
| HCAS | Human Capital Advisory Services |
| HCPAC | Habitat Conservation Plan Advisory Committee (Florida) |
| HCPAC | Health Care Professional Advisory Committee (American Medical Association) |
| HDAC | Historic District Advisory Committee |
| HDAC | Housestaff Diversity Advisory Committee |