| Abbreviation | Definition |
|---|---|
| GRG | GlenRock Group, Ltd. |
| GRG | Global Resource Group, Inc. |
| GRI | Geotechnical Resources Inc |
| GRI | Graduate Realtors Institute |
| GRI | Grupo Radial International |
| GRI | Gruppo Ristoratori Italiani |
| GRIP | Gallatin Responsive Interventions Partnership |
| GRIT | Gould Resources Internet Telecommunications |
| GRLC | Geelong Regional Library Corporation |
| GRMS | Global Risk Management Solutions |
| GRMS | Group Risk Management Services |
| GRN | Global Reservation Network |
| GRP | Global Renumeration Professional |
| GRP | Green Roof Professional |
| GRP | Grey Raid Productions |
| GRP | Group Risk Plan |
| GRP | Grusin Rosen Productions |
| GRPD | Gordon Randall Perry Design Inc |
| GRS | Ghetto Recording Studios |
| GRSC | Global Renewable Synergy Company |