| Terrapin Software | Massachusetts |
| TerraPower, LLC | |
| Terrasat Communications, Inc. | California |
| TERRASCIENCES | Colorado |
| TerraSim, Inc. | Pennsylvania |
| Terrastruct, Inc. | California |
| Terraton | |
| Terrawarp Corporation | Pennsylvania |
| Terray Therapeutics, Inc. | |
| Terray.com | California |
| Terrayn | |
| Terremoto Biosciences | |
| Terrestrial Energy, Inc. | |
| Terrible Posture Games | Massachusetts |
| Territory 3, LLC | Alabama |
| Terrostar Technology Solutions, LLC | Iowa |
| Terry's Satellite City | Kentucky |
| Terryberry | Michigan |
| Terso Solutions, Inc. | Wisconsin |
| Tertl Studos, LLC | Vermont |
| Terumo Medical Corporation | New Jersey |
| Terviva | California |
| Terzetto Digital | California |
| Terzo Technologies, Inc. | California |
| Tesco | Idaho |
| Tescom US | Georgia |
| Tescra, Inc. | California |
| TeselaGen Biotechnology, Inc. | California |
| Teserac, Inc. | |
| Tesis Biosciences | Arizona |
| Tesix Wireless | Alabama |
| Tesla | California |
| Tesla Laboratories, Inc. | Virginia |
| Teslar Software | Arkansas |
| Tesorio | California |
| TesoRx Pharma, LLC | |
| TESS AI | |
| TESSA Marketing & Technology | |
| TESSCO Technologies, Inc. | Maryland |
| Tessell | |
| Tessera Technologies, Inc. | California |
| Tessera Therapeutics | |
| Tesseract | Kansas |
| Tesseract Academy | |
| Tesseract Space, Inc. | |
| Tesseract Systems, Inc. | New York |
| Tesseral | |
| Tessian Ltd | Massachusetts |
| Tessitura Network, Inc. | Texas |
| Tessitura Network, Inc. | |