| SpeedAdmin ApS | |
| Speedtest.DK | |
| spektr ApS | |
| Spenderlog | |
| Spiir A/S | |
| Sports Lab Copenhagen | Capital Region of Denmark |
| Spyman Security ApS | Capital Region of Denmark |
| Spywarefri | Central Denmark Region |
| Spywarefri Shop | Capital Region of Denmark |
| SSI Diagnostica | |
| SSI Diagnostica A/S | |
| ST-Consult ApS | |
| Stadil Sparekasse | |
| Stairways ApS | |
| Standout A/S | |
| Start Up Village | |
| Startup Borgen | |
| Startup Guide | |
| Startup Guide | |
| Startup Letters ApS | |
| Statens Serum Institut | |
| Statical ApS | |
| Stibo DX | |
| Stibo DX A/S | |
| Stibo Systems | |
| Stiesdal | |
| STipe Therapeutics | |
| Stoked | |
| Stories Without Endings | |
| Stovi Software ApS | Central Denmark Region |
| Strand Consult | |
| Strongminds | |
| Struct A/S | Region of Southern Denmark |
| Strunge Grafik | Central Denmark Region |
| STW | Capital Region of Denmark |
| Styrelsen for It og Læring | |
| Styrelsen for Patientsikkerhed | |
| Styromatic A/S | Central Denmark Region |
| Subaio | |
| Subscrybe | |
| Subsets | |
| Substairs ApS | |
| Success Software | |
| Sundhedsstyrelsen | |
| SundVision ApS | Region of Southern Denmark |
| Sunstone Life Science Ventures | |
| Super Mac Service ApS | Capital Region of Denmark |
| Super Vision | Capital Region of Denmark |
| Superb | |
| Superego | |