| Abbreviation | Definition |
|---|---|
| GRDC | Geological Research and Development Centre |
| GRDC | Grains Research and Development Corporation |
| GRDC | Grains Research Development Corporation |
| GRDF | Global Research Development Fund |
| GRDO | Geoscience Research Drilling Office |
| GREAT | Graduate Research Education and Training |
| GREB | General Research Ethics |
| GREB | General Research Ethics Board |
| GRECC | Geriatrics Research Education and Clinical Center |
| GREET | Global Research Experiences Exchanges and Training |
| GREF | Group for Research in Economics and Finance |
| GREL | Geospatial Research and Education Lab |
| GREMM | Group for Research and Education on Marine Mammals |
| GREN | Global Research and Expertise Network |
| GREO | Gambling Research Exchange Ontario |
| GREW | Grants Research and Enterprise Writing |
| GRF | Gilani Research Foundation |
| GRF | Graduate Research Fellowship |
| GRFI | Ghost Research Foundation International |
| GRG | Gastroenterology Research Group |