| Schweitzer Consulting, LLC | |
| Schyte | Virginia |
| SCI Consulting Services, Inc. | Virginia |
| SCI Semiconductor | |
| SCI Ventures | Maryland |
| Sci.bio Recruiting | Massachusetts |
| Sciberus, Inc. | |
| SciComp, Inc. | Texas |
| Sciecure Pharma, Inc. | |
| ScieGen Pharmaceuticals, Inc. | |
| Science | District of Columbia |
| Science 37 | |
| Science Exchange, Inc. | |
| Science Hill, LLC | Colorado |
| Science Media | California |
| Science News | |
| Science On Call | |
| ScienceGL, Inc. | Massachusetts |
| ScienceIO | |
| ScienCell Research Laboratories, Inc. | California |
| ScienceLogic | Virginia |
| Sciencix | |
| Sciensoft Systems | Pennsylvania |
| Scientech Research Capital | New Jersey |
| Scientia Systems, LLC | |
| Scientia Vascular, Inc. | Utah |
| Scientific American | |
| Scientific Bioprocessing | |
| Scientific Computing Associates Corporation | Illinois |
| Scientific Computing International | California |
| Scientific Consulting Group, Inc. | |
| Scientific Financial Systems, Inc. | Massachusetts |
| Scientific Games | Nevada |
| Scientific Protein Laboratories | |
| Scientific Ranking | |
| Scientific Research Corporation | Georgia |
| Scientific Research Publishing, Inc. | |
| Scientific Software Group | Utah |
| Scientific Software International, Inc. | Illinois |
| Scientific Systems and Software International Corporation | Maryland |
| Scientific Toolworks, Inc. | Utah |
| Scientist | |
| SCIEX | Massachusetts |
| SciGene Corporation | California |
| Scilex Holding | California |
| Scilico, LLC | |
| Scilligence | Massachusetts |
| Scimage | California |
| SciMed | |
| Scimedx Corporation | New Jersey |