| Abbreviation | Definition |
|---|---|
| GFO | Grain Farmers of Ontario |
| GHTA | Gift and Home Trade Association |
| GIRS | Genevan Institute for Reformed Studies |
| GIRS | Greater Iowa Reef Society |
| GKV | Gurukula Kangri Vishwavidyalaya |
| GORISEME | Global Opportunities! Revolutionary Interaction Solutions for Entrepreneur! Model of Eminent! |
| GORISEME | Global Opportunities! Revolutionary Interaction Solutions for Entrepreneur! Model of Eminent! |
| GPSO | Greater Philadelphia Society of Orthodontics |
| GPTA | Guatemala Produce Trade Association |
| GSMT | Gramin Samassya Mukti Trust |
| GTAAAC | Greater Toronto Area Agriculture Action Committee |
| GTAGA | Greater Toronto Area Golf Association |
| GTHBAUDI | Greater Toronto Home Builders Association-Urban Development Institute |
| GTSWCA | Greater Toronto Sewer and Watermain Contractors Association |
| HEAC | Healthy Eating Active Communities |
| HEDB | Higher Education Development Board |
| HIC | Handbell Industry Council |
| HMDC | Health Manpower Development Centre |
| HNGC | Hastings Ninth Grade Center |
| HOTA | Hands On Trade Association |