| Greptile | |
| Grexo | Texas |
| Grey Dog Software | Massachusetts |
| Grey Ghost Studio | Oregon |
| GreyCampus | Texas |
| Greycroft | |
| Greycroft Partners | New York |
| Greylock Partners | California |
| GreyNoise, Inc. | District of Columbia |
| Greyphin Industries, LLC | |
| Greyrock Capital Group | California |
| Greyscalegorilla, Inc. | |
| GreyScout | |
| Greyskye Marketing Consultants, LLC | |
| Greystack Management, LLC | |
| Greystar Solutions | Georgia |
| Greystone & Co. II, LLC | Massachusetts |
| Greystone Components Corporation | Massachusetts |
| Greystone Technology | Colorado |
| GRI Bio, Inc. | California |
| GRI Technology Solutions, LLC | Louisiana |
| Grid Biosciences | |
| Grid Connect, Inc. | Illinois |
| Grid Dynamics International, Inc. | California |
| Grid Marketing, Inc. | |
| Grid Status | |
| Grid Therapeutics | |
| GridCure | Colorado |
| GridEdge Networks, Inc. | Massachusetts |
| GridFree AI | |
| GridGain Systems, Inc. | California |
| Gridics, LLC | |
| Gridiron Capital, LLC | Connecticut |
| Gridlastic, LLC | Nevada |
| Gridline | Arizona |
| GridMarkets | |
| GridRaster, Inc. | California |
| GridSix Interactive | Montana |
| Gridspace | California |
| Gridtential Energy, Inc. | |
| Gridtwin | Massachusetts |
| Gridware | |
| Gridwise, Inc. | |
| Griffin & Co. Marketing, LLC | |
| Griffin Consulting Group, Inc. | Michigan |
| Griffin Technology | Tennessee |
| Griffin Web Design & Marketing | North Carolina |
| Griffin Web Design, LLC | North Carolina |
| Griffon Aerospace | Alabama |
| Grifin | Florida |