| Abbreviation | Definition |
|---|---|
| GNC | General Nutrition Company |
| GNC | General Nutrition Corporation |
| GNDC | Great Northern Development Corporation |
| GNDL | Great Northern Developments Limited |
| GNDT | Good Neighbor Dog Training |
| GNE | Global Natural Energy, P. L. C. |
| GNKS | Global Network Keg Services |
| GNLC | Great Northern Llama Company |
| GNPC | Gambia National Petroleum Company |
| GNPC | Ghana National Petroleum Company |
| GNPC | Ghana National Petroleum Corporation |
| GNPC | Glass Nickel Pizza Company |
| GNPOC | Great Nile Petroleum and Oil Corporation |
| GNPOC | Greater Nile Petroleum Operating Company |
| GNR | Global Network Recruiting |
| GNS | Great Northern Stone |
| GNSC | Guyana National Shipping Corporation |
| GNT | Great Northern Telegraph |
| GNTC | Great Northern Theatre Company |
| GNTC | Guaranty National Title Company |