| Abbreviation | Definition |
|---|---|
| GR | General Radio |
| GR | Ghost Reapers |
| GR | Glenn Research |
| GR | Greenfield And Robinson |
| GR | Ground Rule |
| GRAM | Grand River Aseptic Manufacturing |
| GRC | German Riders Collection |
| GRC | Gibson Research Corporation |
| GRC | Global Results Company |
| GRDC | Georgian Reconstruction and Development Company |
| GRDC | Grafton Regional Development Corporation |
| GRDC | Grains Research and Development Corporation |
| GRDC | Grains Research Development Corporation |
| GRDC | Greenville Reynolds Development Corporation |
| GRE | Great River Energy |
| GREC | Global Renewable Energy Corporation |
| GREC | Greenpoint Renaissance Enterprise Corporation |
| GREG | General Recording Entertainment Group |
| GRFL | Gateway Rail Freight Ltd |
| GRG | Garretts Rockin Group |