| Texas State University Round Rock Campus | Texas |
| Texas State University System | Texas |
| Texas Statewide Telephone Cooperative, Inc. | Texas |
| Texas Surveillance & 911 Security | Texas |
| Texas Tech University Department of Computer Science | Texas |
| Texas Tech University Department of Mathematics & Statistics | Texas |
| Texas Tech University Electrical and Computer Engineering | Texas |
| Texas Tech University Health Sciences Center | Texas |
| Texas Tech University Health Sciences Center El Paso | Texas |
| Texas Tech University System | Texas |
| Texas TechPulse | Texas |
| Texas Towers | Texas |
| Texas Ventures | Texas |
| Texas Wesleyan University | Texas |
| Texas Woman's University | Texas |
| Texas-Israel Alliance | |
| TexasCreative | |
| TexaSoft | Texas |
| Texbase, Inc. | Montana |
| Texhoma Wireless, LLC | Texas |
| Texoma Tech Hub | |
| Text Control, LLC | North Carolina |
| Text-em-all | Texas |
| Text2Drive | |
| TextAim | |
| Textbroker International, LLC | |
| Textco BioSoftware, Inc. | North Carolina |
| Textellent, Inc. | Texas |
| TextExpander, Inc. | California |
| Textgrid Ltd | |
| TextingOnly | Maryland |
| Textio | Washington |
| Textla | |
| Textline, Inc. | California |
| TextLinkBrokers.com | Arizona |
| TextMarks, Inc. | California |
| textPlus, Inc. | California |
| TextQL, Inc. | |
| Textricks Soolutions, Inc. | |
| Textron Systems | Texas |
| Texture | |
| Texture Capital Holdings Corporation | New York |
| Textware Solutions | Massachusetts |
| Texve, LLC | |
| Teza Technologies, LLC | |
| Tezi, Inc. | |
| Tezo Solutions, Inc. | Texas |
| Tezzaron | Texas |
| TF Holdings, Inc. | |
| TFC Design | California |