- Radientum
- RAIN
- Rakennusoutlet
- Rakka
- Random Potion
- Rapport
- Rappta Therapeutics
- Rate the Job
- Ravogen Oy
- Raxalle
- Reactored
- React & Share
- ReadPeak
- Reality Crisis
- ReceiptHero
- Recharge
- reconfigured
- Redhill Games
- REDi Ai Oy
- Redigen
- Red Nettle Studios
- Redono
- Red Stage Entertainment
- ReFaMo Oy
- Refine Reality
- Rehaboo
- Remomedi
- Renda
- Rens Original
- Rentfol.io
- Rentle
- Rentmania
- ReOrbit
- Replendo
- Resimator
- Resitance Games
- ResQ Club
- Rester
- Result Digital Oy
- Retro-EV
- Return Entertainment
- Revonte
- Richen
- Rigged Mind
- Riots Global
- Riverrecycle Oy
- RMK Vehicle Corporation
- RoadCloud
- RoboCorp
- RoboMed
- Roboride
- Rockodile Games
- RockOn
- Rock Paper Scissors
- Rohje
- Rokote Laboratories
- Rollector.ai
- RoostLab
- RootRoo
- Rosekiss
- Rounders Entertainment
- Round Zero
- Rout IO Technologies
- ROVJOK
- RumbleTools
- Rundit
- Ruokaboksi
- Ruuvi Innovations