| Abbreviation | Definition |
|---|---|
| GGFF | Greenstreet Gardens Fall Festival |
| GGTT | Go Get The Troids |
| GHF | Grape Harvest Festival |
| GHF | Grassland Heritage Festival |
| GHFJ | Greater Hartford Festival of Jazz |
| GICF | Glasgow International Comedy Festival |
| GIFF | Geocaching International Film Festival |
| GIFF | Greenwich International Film Festival |
| GIFF | Guam International Film Festival |
| GIFF | Guanajuato International Film Festival |
| GIHF | Grolier Interactive Holiday Festival |
| GLFF | Gainesville Latino Film Festival |
| GLWF | Great Lakes Woodworking Festival |
| GMAF | Great Midwest Alpaca Festival |
| GMF | Global Music Festival |
| GMMF | Georgia Marble Marching Festival |
| GMMF | Goats Music and More Festival |
| GMMF | Green Mountain Mahler Festival |
| GNAF | Great Northern Arts Festival |
| GNN | Global Night of Networking |