| Telecom Engineering, Inc. | Minnesota |
| Telecom Global Services | New Jersey |
| Telecom National | Arizona |
| Telecom Networking Services, Inc. | California |
| Telecom Product Profiles, LLC | Indiana |
| Telecom Search Group, Inc. | California |
| Telecom Surplus Resources, Inc. | Colorado |
| Telecom Technicians, Inc. | Michigan |
| Telecom Technologies, Inc. | Minnesota |
| Telecom Training Corporation | Tennessee |
| Telecom Vision, Inc. | Texas |
| Telecom Visions, Inc. | Virginia |
| TelecomEngine.com | Massachusetts |
| Telecomex | Massachusetts |
| Telecommunication Association of Michigan | Michigan |
| Telecommunication Technologies Group, Inc. | Ohio |
| Telecommunications Engineering Associates | California |
| Telecommunications Industry Association | Virginia |
| Telecommunications Policy Research Conference | Virginia |
| TeleComp | Arkansas |
| TelecomsXChange, LLC | Florida |
| Teledex | Colorado |
| TeleDynamic Communications, Inc. | California |
| TeleDynamics | Texas |
| Teledyne Aerospace &Defense Electronics | |
| Teledyne Brown Engineering | |
| Teledyne Controls | California |
| Teledyne Energy Systems, Inc. | |
| Teledyne FLIR, LLC | |
| Teledyne Judson Technologies | |
| Teledyne LeCroy | New York |
| Teledyne Photometrics | Arizona |
| Teledyne Technologies | |
| TeleGeography | District of Columbia |
| Telegraph Creative | Alabama |
| Telegraph Hill Capital | California |
| Telegraph Hill Partners | California |
| TelehealthNet | California |
| Telehouse | New York |
| Telelink Communications, Inc. | Virginia |
| TeleManagement Technologies, Inc. | California |
| Telemate | Georgia |
| TeleMate, LLC | Georgia |
| TeleMatrix | Colorado |
| Telemeister Strategic Services, LLC | California |
| Telemet America, Inc. | Virginia |
| TeleNet Marketing Solutions | Georgia |
| Telenet VoIP, Inc. | California |
| Telenity, Inc. | Connecticut |
| Telepath Corporation | California |