| Skyqraft | |
| Skyresponse AB | |
| Slagkryssaren AB | Stockholm |
| Slipp AB | |
| Smart Agritech Solution | |
| Smart Eye | |
| Smart Recycling | |
| Smart Refill AB | |
| Smart Retur AB | |
| Smart Sensor Devices AB | |
| Smarta Hemsidor | |
| SmartCella Holding AB | |
| Smarticle AB | |
| Smartify | |
| SmiLe Incubator | |
| Smode Webbyrå | |
| Smoltek Nanotech Holding AB | |
| Snapcode AB | |
| SnapGene | |
| Snapphanebygdens Sparbank | |
| Snow Software AB | Stockholm |
| Snowfire | |
| Snowfire AB | |
| Sociallite ME AB | |
| Society icon | |
| Södertörns högskola | Stockholm |
| Södra Hestra Sparbank | |
| SOFT | Stockholm |
| Softeam AB | Västra Götaland |
| Softhouse Consulting Småland AB | Jönköping |
| Softify | |
| SoftOne | |
| SoftRobot | |
| SoftRobot Sweden | |
| Softube | |
| Softwerk AB | |
| Sogeti Sverige AB | Stockholm |
| Solenergiteknik | |
| SolidEngineer AB | Stockholm |
| Solidmakarna | Stockholm |
| Solkompaniet Sverige AB | |
| Solkraft Sverige | |
| Soltak AB | |
| Soltech Energy Sweden AB | |
| Solutionis AB | |
| Solutions for tomorrow | |
| SOLVE Research & Consultancy AB | |
| Sölvesborg-Mjällby Sparbank | |
| Solvi AB | |
| Sonic Group Sweden AB | |