| Stevens & Tate Marketing | Illinois |
| Stevens Capital Management | |
| Stevens Creek Software | California |
| Stevens Institute of Technology Department of Computer Science | New Jersey |
| Stevens Institute of Technology Department of Electrical and Computer Engineering | New Jersey |
| Stevens Institute of Technology Department of Mathematical Sciences | New Jersey |
| Stevens Institute of Technology Stevens Institute for Artificial Intelligence | New Jersey |
| Stevens The Institute of Business & Arts | Missouri |
| Stevenson University | Maryland |
| Stewart Technologies, Inc. | Virginia |
| STF Designs | California |
| Stfalcon, LLC | |
| STG Communication Services | Ohio |
| STG Partners, LLC | California |
| Sthenos Technologies | |
| STI Computer Services | Pennsylvania |
| STI Pharma, LLC | |
| STI-CO Industries, Inc. | New York |
| Stich | |
| Stickboy Creative | Florida |
| Sticky Brain Digital Marketing | |
| StickyMinds | Florida |
| StickyStreet | |
| Stifel Financial Corporation | |
| Stigan Media, Inc. | |
| Stigg, Inc. | |
| Still River Software Company, LLC | Connecticut |
| Still Water | |
| Stillman College | Alabama |
| Stillwater Supercomputing, Inc. | California |
| Stimdia Medical, Inc. | Minnesota |
| Stimler Advantage, LLC | New York |
| Stimulant | California |
| Stimulus Technologies | Nevada |
| Stimulus Technology | New Jersey |
| Stimulus, LLC | |
| Stinghouse Creative | |
| Stinkbot, LLC | |
| Stipop, Inc. | |
| STIR Advertising & Integrated Messaging | |
| Stira Pharma | |
| Stirista, LLC | |
| Stirling Brandworks | |
| Stitch | Pennsylvania |
| Stitch Labs | California |
| StitcherAds | Texas |
| Stixlink.com, LLC | |
| STL | Illinois |
| STL Search Marketing and SEO | |
| StLWebDesigns.com | Missouri |