| Abbreviation | Definition |
|---|---|
| GPDI | Great Plains Drywall, Incorporated |
| GPEC | Gas Purification Engineering Corporation |
| GPG | Golden Palace Gaming |
| GPH | Gomersal Park Hotel |
| GPHA | Georgia Polled Hereford Association Inc |
| GPI | Gasket Packings Inc |
| GPI | Geotechnical Professionals Inc |
| GPI | Global Perspectives, Inc. |
| GPI | Global Promotions, Inc. |
| GPI | Global Property Investments |
| GPI | Glotrax Polymers, Inc. |
| GPI | Gran Prix International |
| GPI | Greenman Pedersen Inc |
| GPI | Greenwood Partnership Initiative |
| GPI | Greyhound Pets Inc |
| GPI | Guilford Pharmaceuticals, Inc. |
| GPIC | Gaming Partners International Corporation |
| GPIC | Gulf Petrochemical Industries Company |
| GPJ | George P. Johnson |
| GPK | GPKeystone Holding Sarl |