| SiteWired Web Solutions, Inc. | |
| SiTex Graphics, Inc. | Texas |
| SiteZeus | Florida |
| SiTime Corporation | California |
| SitScape | Virginia |
| Sitting Bull College | North Dakota |
| Situation Interactive | New York |
| Siva Solutions, Inc. | |
| Sivart Software | Washington |
| SIVI, LLC | |
| Siwa Therapeutics | |
| Six Degrees, LLC | |
| Six Feet | Indiana |
| Six Feet Up, Inc. | Indiana |
| Six Figure Design | California |
| Six Foot | Texas |
| Six Mile Creek Systems, LLC | New York |
| Six One Property Solutions, LLC | |
| Sixfold AI, Inc. | |
| Sixgen | |
| Sixlogs Technologies | |
| Sixmap | |
| SixSigma.us | Texas |
| Sixth City Marketing | |
| Sixth Gear, LLC | |
| Sixth Man Technologies, Inc. | Michigan |
| SixThirty Ventures, LLC | Missouri |
| Sixty Degrees Pharmaceuticals, Inc. | |
| Sizeable, Inc. | Maryland |
| Sizzling Studios | Indiana |
| Sizzling Web Design | California |
| SJ Innovation | |
| SJC Marketing | Missouri |
| SJE-Rhombus | Minnesota |
| SJF Ventures | North Carolina |
| SJInnovation, LLC | New York |
| SJM Industrial Radio | California |
| SK Capital Partners | New York |
| SK Global Software, LLC | Texas |
| SK hynix memory solutions America, Inc. | California |
| SK Life Science, Inc. | New Jersey |
| SK pharmteco, Inc. | |
| SK Telecom Americas | California |
| SK Website Works | |
| SKA Custom Robots & Machines | Pennsylvania |
| SkaDate | Indiana |
| Skagit Valley College | Washington |
| Skai | California |
| Skala, Inc. | |
| Skaled | New York |