| Abbreviation | Definition |
|---|---|
| GHI | Group Health Insurance |
| GHMC | Greater Hyderabad Municipal Corporation |
| GI | Gary, Indiana |
| GI | Grand Island |
| GIC | Group Insurance Commission |
| GICH | Governor's Interagency Council on Homelessness |
| GICN | Georgia Infection Control Network |
| GIDC | Georgia Indigent Defense Council |
| GIFC | Guemes Island Ferry Committee |
| GIMC | Georgia Intrastate Motor Carrier |
| GJMC | Greater Johannesburg Metropolitan Council |
| GLC | Great Lakes Commission |
| GLD | Graduated licensed driver |
| GLO | Government Land Office |
| GLWB | Gwich'in Land and Water Board |
| GLWQD | Gallatin Local Water Quality District |
| GMAG | Georgia Mutual Aid Group |
| GMC | Gauhati Muninicipal Corporation |
| GMCB | Green Mountain Care Board |
| GMHB | Growth Management Hearings Board |