| Q-Net | Ostrobothnia |
| Q5 Software Oy | |
| Qentinel Group | Uusimaa |
| Qmea | |
| QMill Oy | |
| QPR Software Oyj | Uusimaa |
| Quanscient | |
| Quantastica | |
| QuantrolOx Ltd | |
| Quantum Programming Studio | |
| Quantum Technology Finland | |
| Quanturi Oy | |
| Quartal | Uusimaa |
| Qubilea Oy
| |
| Quicksave Interactive Ltd | |
| Quru | |
| Quuppa | |
| Qvik | Uusimaa |
| R. Linturi Oy | |
| Rails Girls | |
| Raksystems Group | |
| Ramentor Oy | Pirkanmaa |
| Ranta Solutions Oy | |
| Rappta Therapeutics Oy | |
| Rauha 2 Webdesign | Uusimaa |
| Reactron Technologies Ltd | |
| Reaktor | |
| Reaktor Ventures | |
| Realsoft Oy | Pirkanmaa |
| ReApptor | |
| ReceiptHero | |
| Redhill Games Ltd | |
| RedLynx Oy | Uusimaa |
| Reflector Oy | |
| REFLEX Solutions | |
| Remedy Entertainment plc | Uusimaa |
| Rentle Oy | |
| ReOrbit | |
| RePack | |
| Republic of Communications | |
| Resistomap | |
| ResQ Club | |
| Resulttia Software | Pirkanmaa |
| Resulttia Solutions | Pirkanmaa |
| Return Entertainment Oy | |
| Revolve Studio | |
| Revulon | Päijänne Tavastia |
| Rewheel Oy | |
| Reworks Oy | Uusimaa |
| Ricoh Finland Oy | Uusimaa |