| Abbreviation | Definition |
|---|---|
| OG | Oriental Grill |
| OGA | Online Graphics Associates |
| OGB | Obrazovanje gradi Bosnu |
| OGC | Old Gate Consulting |
| OGC | Organically Grown Company |
| OGD | Overhead Garage Doors UK |
| OGDC | Oak Grove Development Corporation |
| OGDC | Oil & Gas Development Company |
| OGDC | Oil & Gas Development Corporation |
| OGDC | Oil and Gas Development Company |
| OGDC | Oil Gas Development Company |
| OGDCL | Oil and Gas Development Company Limited |
| OGE | Orange Group Enterprises |
| OGHD | Old Glory Harley-Davidson (Laurel, MD) |
| OGI | Oklahoma Genetics Inc |
| OGOC | Oil & Gas Operations and Consulting, Inc. |
| OGP | Oil and Gas Producers |
| OGP | Optical Gaging Products |
| OGS | Oxford GlycoSciences, P. L. C. |
| OGSN | Oil and Gas Security Network |