| Abbreviation | Definition |
|---|---|
| GHI | Giving Hope International |
| GHINTL | Giving Hope International |
| GHM | Global Health Ministries |
| GHTA | Ganaraska Hiking Trail Association [Ontario, Canada] |
| GIANTS | Generosity Integrity Action Nobility Truthfulness And Service |
| GICF | Grand Island Community Foundation |
| GICH | Georgia Industrial Children's Home |
| GICH | Georgia Initiative for Community Housing |
| GICN | Global Island Conservation Network |
| GICS | Grampians Integrated Cancer Service |
| GICV | Goodwill Industries of the Conemaugh Valley |
| GICW | Goodwill Industries of the Columbia - Willamette |
| GIF | German Israeli Foundation |
| GIFB | Global Islamic Foundation for the Blind |
| GIFC | Glen Innes Family Centre |
| GIGNA | Gluten Intolerance Group of North America |
| GII | Goodwill Industries International |
| GIII | Goodwill Industries International, Inc. |
| GIK | Gifts In Kind |
| GIK | Gifts In Kind International |