| Name | Region |
|---|---|
| Curity AB | |
| Curoflow | |
| Cursio AB | |
| Cybercom Group AB | Stockholm |
| Cybix AB | Uppsala |
| Cygate | Stockholm |
| Cygate AB | Värmland |
| Cykelbolaget Stockholm AB | |
| Cyxone AB | |
| Dagens industri | |
| Dalarna Digital | |
| DanAds | |
| DanPET AB | |
| Danske Bank Group | Stockholm |
| Data Ductus | |
| Data Hjälp Service AB | Stockholm |
| Dataförlaget i Växjö AB | Kronoberg |
| DataPartner | Västra Götaland |
| Dataplus System AB | Västra Götaland |
| DataProtect Sverige AB | |
| Datatalks | |
| Datatel AB | Gotland |
| Dataton AB | Östergötland |
| Datia | |
| Datormagazin | Stockholm |
| Davveroit | Stockholm |
| Daymi | |
| DBT Capital AB | |
| DbVisualizer | Stockholm |
| Dcipher Analytics | |
| DealStation | |
| Debricked AB | |
| deBroome AB | |
| Decerno AB | Stockholm |
| Defentry AB | |
| Degoo | Stockholm |
| Delibr AI | |
| Della8 | |
| Dentech AB | |
| Depict AB | |
| Dermicus | |
| Desifer | Stockholm |
| Design Box | Stockholm |
| Design Pack AB | Gävleborg |
| Designtech Solutions AB | Norrbotten |
| Detecht Technologies AB | |
| Detectify AB | Stockholm |
| DevCode | |
| DevCore | Stockholm |
| Devello Systemutveckling AB | Västra Götaland |