| Devolon | |
| Dicode Oy | |
| Digia Oyj | Uusimaa |
| Digita Oy | Uusimaa |
| Digitaalinen asuntokauppa DIAS Oy | |
| Digital Flask | Uusimaa |
| Digitalist Group | |
| Digitase Oy | |
| Dingle | |
| Disior Ltd | |
| Dispelix | |
| Distence Oy | |
| Dixu | |
| DNA Oy | Uusimaa |
| DŌBRA Impact Venture Studio | |
| Domainhotelli Oy | Southwest Finland |
| Domainkeskus | Southwest Finland |
| Doventus Oy | |
| e-Oppi | |
| Easylinehost | Northern Savonia |
| Ecster AB, sivuliiketoiminta Suomessa | |
| Education Finland | |
| EduCluster Finland Ltd | |
| Edunation Oy | |
| eeedo oy | |
| Eficode | |
| EKE-Electronics Ltd | |
| Electronic Frontier Finland ry | Uusimaa |
| ElFys, Inc. | |
| Elisa Industriq Finland Oy | |
| Elisa Oyj | |
| Elvi Growth Partners | |
| eMabler | |
| EmblaCom | Uusimaa |
| EmCe Solution Partner Oy | Uusimaa |
| Emittor Oy | |
| Emphasoft | |
| Empirica Finland Oy | Southwest Finland |
| Endev | |
| Enento Group | |
| EnergySpin | |
| Eneron Oy | |
| Enersense International Oyj | |
| Enfuce Financial Services Ltd | |
| Enhancell Ltd | |
| eniferBio | |
| Enterpay | |
| Enterprixe Software Oy | |
| Equilibrium | |
| ERresQ | |