| Guidewheel | |
| Guidewire Software, Inc. | California |
| Guiding Light Productions, Inc. | |
| Guiffy Software | Missouri |
| Guifx, LLC | Florida |
| Guild Capital Management, LLC | |
| Guild Education, Inc. | |
| Guild Software, Inc. | Wisconsin |
| GuildQuality, Inc. | |
| Guilford College | North Carolina |
| GUIPlot | Washington |
| Gula Tech Adventures, Inc. | Maryland |
| Gulf Coast Networking | Alabama |
| Gulf Coast State College | Florida |
| Gulf South | Louisiana |
| Gulf South Technology Solutions, LLC | Louisiana |
| Gulf State Software | Texas |
| Gulf State Software | |
| Gulf States Automation | Florida |
| Gulfcoast Networking, Inc. | Florida |
| Gulfwebs.com | Florida |
| Gullview Technologies | Minnesota |
| Gulo Solutions, LLC | Illinois |
| Gulton, Inc. | New Jersey |
| Gum Design, LLC | |
| Gumas | |
| Gumbo Software, Inc. | Washington |
| GumGum, Inc. | California |
| gumi Cryptos Capital, LLC | California |
| Gumloop | |
| Gummicube | |
| Gumroad, Inc. | Nebraska |
| Gumstix, Inc. | California |
| Gun.io | Tennessee |
| Gunn | Jerkens | |
| Gunnar Games, Inc. | Florida |
| Gunpowder Labs, LLC | |
| Gunter Consulting, Inc. | |
| Gunze Electronics USA | Texas |
| Guppy Media | Washington |
| GuppyFish Web Design, LLC | Virginia |
| Gupshup | California |
| Gurnet Point Capital | Massachusetts |
| Gurobi Optimization, LLC | Oregon |
| Guru Experience | |
| Guru Labs | Utah |
| GURU Solutions | |
| Guru Technologies | |
| Guru Technologies, Inc. | Pennsylvania |
| Guru.com | Pennsylvania |