| Abbreviation | Definition |
|---|---|
| GRDF | Georgian Research and Development Foundation |
| GRF | Gilani Research Foundation |
| GRFA | George Rodrigue Foundation of the Arts |
| GRFI | Ghost Research Foundation International |
| GRFL | Grains Research Foundation Limited |
| GRHF | Grand River Hospital Foundation |
| GRHF | Greater Rochester Health Foundation |
| GRIEF | Gambling Research Information Education Foundation |
| GRPF | Geosynthetic Reinforced Pile Foundation |
| GRPF | Global Roaming Pilbara Foundation |
| GRPF | Golden Ratio Project Foundation |
| GRTF | Grand Rapids Trans Foundation |
| GSBF | Give Something Back Foundation |
| GSF | Growing Spine Foundation |
| GSF | General Service Foundation |
| GSF | Genocide Survivors Foundation |
| GSF | Global Settlement Foundation |
| GSGF | Georgia State Golf Foundation |
| GSHF | Good Samaritan Hospital Foundation |
| GSIF | Good Shepherd International Foundation |