| SPIE | |
| Spieker Point, Inc. | |
| Spier Consulting, Inc. | New York |
| Spierings Communications | |
| Spiff.store | |
| Spiff3d | |
| Spiffy | |
| Spigot Design | Utah |
| Spiiider | Kentucky |
| Spike Aerospace, Inc. | Massachusetts |
| Spike AI | |
| SPIKEnology | South Carolina |
| Spikewell, LLC | Massachusetts |
| Spiky.ai | Massachusetts |
| Spil | New York |
| Spilman Resources Ltd | Georgia |
| SPIN Analytics and Strategy | |
| Spin Group | Wisconsin |
| Spin Memory, Inc. | California |
| Spin.AI | California |
| Spinal Elements, Inc. | California |
| Spinal Resources, Inc. | Florida |
| Spinal Simplicity | |
| Spinapse, Inc. | California |
| SpinCore Technologies, Inc. | Florida |
| Spindletop Digital, LLC | |
| Spindustry Systems, Inc. | Iowa |
| Spine BioPharma, Inc. | |
| SpineAlign Medical, Inc. | |
| Spinen | Georgia |
| Spineology, Inc. | Minnesota |
| Spines | |
| SpineSmith | Texas |
| SpineSource, Inc. | Missouri |
| SpineThera, Inc. | Minnesota |
| SpineX, Inc. | California |
| Spinjutsu | North Carolina |
| SpinLaunch | |
| Spinnaker Add-ins.com | New Hampshire |
| Spinnaker Biosciences, Inc. | California |
| Spinnaker Sales Group, LLC | |
| Spinnaker, LLC | Kansas |
| Spinneret | Texas |
| Spinogenix, Inc. | |
| SpinTech MRI | Michigan |
| Spinutech, LLC | Iowa |
| Spinwheel | |
| SPINX Digital | California |
| Spirair, Inc. | |
| Spiral Bridge Solutions, LLC | |