| Name | Region |
|---|---|
| Besco Software | Uusimaa |
| Biohit Oyi | |
| Bioretec Ltd | |
| Biovian Oy | |
| Bitbar.com | Uusimaa |
| Bitmaster Helsinki | Uusimaa |
| Bitpoint Oy | Pirkanmaa |
| Bitwards | |
| Bitwise Oy | Pirkanmaa |
| Blend Media Oy | Uusimaa |
| Blockchain Forum ry | |
| Bluenote Software Oy | Uusimaa |
| Blueprint Genetics Oy | |
| Bluetech Finland | |
| BMM Solutions | Uusimaa |
| Boksi.com Solutions Oy | |
| Bolt.Worky Oy | |
| Bon Games | |
| Bone Index Finland Oy | |
| Bonusway | |
| Boogie Software Oy | |
| BrandBastion | |
| Brik Kodit Oy | |
| BroadBit Batteries Oy | |
| Broomu Digitals | |
| Bugbear Entertainment | Uusimaa |
| Builderhead | |
| Business Finland | |
| Business Jyväskylä | |
| Business Turku | |
| Buttercup | Uusimaa |
| Butterfly | North Ostrobothnia |
| C Finance Oy | |
| Cactos | |
| Cadmandata Oy | Pirkanmaa |
| Cadmatic | Southwest Finland |
| Caidio | |
| Cambri | |
| Canatu Oy | |
| Canon Oy | Uusimaa |
| Carbo Culture | |
| Casambi Technologies | |
| Casambi Technologies Oy | |
| Causalytics | |
| Cerenion Oy | |
| CH-Bioforce Oy | |
| CHAOS | |
| Chipmetrics | |
| Cinia Oy | North Ostrobothnia |
| City Dev Labs |