| Stanford University Artificial Intelligence Laboratory | California |
| Stanford University Brutlag Bioinformatics Group | California |
| Stanford University Byers Center for Biodesign | California |
| Stanford University Center for Automotive Research | California |
| Stanford University Center for the Study of Language and Information | California |
| Stanford University Computer Science Department | California |
| Stanford University Department of Mathematics | California |
| Stanford University Electrical Engineering | California |
| Stanford University Human-Centered Artificial Intelligence | California |
| Stanford University Institute for Computational & Mathematical Engineering | California |
| Stanford University mediaX | California |
| Stanford University Protégé | California |
| Stanford University Quantum Computing Association | California |
| Stanford University Technology Ventures Program | California |
| Stanford University Theory Group | California |
| Stanley Convergent Security Solutions, Inc. | Indiana |
| STANLEY Engineered Fastening | Maryland |
| StantDesign | Rhode Island |
| Stanton Street | Texas |
| Staples, Inc. | Massachusetts |
| STAPS Solutions | |
| Star Capital | Florida |
| Star Catcher Industries, Inc. | |
| Star City Game Center | Virginia |
| Star Communications | North Carolina |
| Star Host Design, LLC | Minnesota |
| Star Knowledge | |
| Star Lab Corporation | District of Columbia |
| Star Lite International, LLC | Michigan |
| STAR Service Manager | Nevada |
| Star Software | Louisiana |
| Star Struck Web Solutions | |
| Star Systems Engineering, Inc. | Pennsylvania |
| Star Tec Software | Texas |
| STAR Therapeutics, Inc. | |
| Star Web, LLC | |
| Star World Web, LLC | |
| Star*Key Software | California |
| Star360feedfack | Utah |
| Stara Space | |
| StarAgile | |
| Starbelly Designs | |
| Starboard Capital Partners, LLC | Connecticut |
| Starboard Systems, Inc. | |
| Starborn Media | |
| Starbridge Venture Capital, LLC | District of Columbia |
| Starburst Data, Inc. | Massachusetts |
| Starbust Aerospace | California |
| Starchive | Virginia |
| StarCima, LLC | |