| GTE Financial | |
| Gtechna, Inc. | |
| Gtek Communications | Texas |
| GTH Cloud 365 | |
| GTI Energy | |
| GTM Consultants, Inc. | Nevada |
| GTMA | |
| GTMfund, LLC | |
| Gtmhub | Colorado |
| GTN Technical Staffing | Texas |
| GTreasury | Illinois |
| GTS Communications | Ohio |
| GTS Services | Oregon |
| GTS Technologies | Tennessee |
| GTT Communications, Inc. | Virginia |
| Guarana Technologies, Inc. | |
| Guard-IT Escrow Services | Texas |
| Guardant Health | California |
| Guardian | |
| Guardian Analaytics | California |
| Guardian Business Solutions | Wisconsin |
| Guardian Networks | California |
| Guardian Owl Digital | |
| Guardian Protection Services | Pennsylvania |
| Guardian Software Systems | Wisconsin |
| Guardian Therapeutics | |
| Guardinex, Inc. | Pennsylvania |
| GuardOn | |
| Guardrails AI | |
| GuardSite.com | California |
| Guarnery Communications | Illinois |
| Guarnic Tech, LLC | |
| Guavus, Inc. | California |
| Guest-Note | |
| Guestware | Washington |
| GuestXM | Texas |
| Guesty, Inc. | California |
| Guidance | California |
| Guidde | California |
| Guide Star | |
| GUIDEcx | Utah |
| Guided Technology | New York |
| Guidehouse | District of Columbia |
| Guidelight Business Solutions, Inc. | Texas |
| Guideline, Inc. | California |
| GuideMia Technologies, Inc. | |
| Guidepoint Global, LLC | |
| GuideSTAR Technologies, Inc. | Colorado |
| GuideTech | California |
| GuideWell Innovation Center | Florida |