| Republic of Communications | |
| Resistomap | |
| Resulttia Software | Pirkanmaa |
| Resulttia Solutions | Pirkanmaa |
| Return Entertainment Oy | |
| Revulon | Päijänne Tavastia |
| Rewheel Oy | |
| Reworks Oy | Uusimaa |
| Ricoh Finland Oy | Uusimaa |
| Rightware | Uusimaa |
| Riihisoft Oy | |
| Riskrate | |
| RoadCloud Oy | |
| Robot Power Finland Oy | |
| Roima Intelligence, Inc. | Uusimaa |
| Rokote Laboratories Finland Oy | |
| Rovio Entertainment Corporation | Uusimaa |
| Rundit Oy | |
| Rusto Games | |
| RVM Systems Oy | |
| Saidot Ltd | |
| Salaxy | |
| Salusfin Oy | |
| Sange | |
| SAP Finnish User Group ry | Uusimaa |
| Saparo Translational Research | |
| Sayduck Ltd | |
| School Day Helsinki Oy | |
| Screenful | |
| Secapp Oy | |
| Seepia Games Oy | |
| Segetech Ltd | Uusimaa |
| Seinäjoen ammattikorkeakoulu | South Ostrobothnia |
| Seita Technolgies Oy | |
| Sellforte Solutions Oy | |
| Sensible 4 | |
| Sensmet Oy | |
| Sentica.fi | |
| Seravo Oy | |
| Seriously Digital Entertainment Ltd | |
| Sermatech Oy | |
| Serviceform | |
| Setera Communications Oy | |
| Sharetribe Oy | |
| Shipyard Games | |
| Sievo | |
| Sigmatic / Telia Inmics-Nebula Oy | Uusimaa |
| Silo.AI | Uusimaa |
| SimAnalytics Oy | |
| Singa Oy | |