| Name | Region |
|---|---|
| WheelQ | Uusimaa |
| Whim | Uusimaa |
| Wimao Ltd | |
| Winpos | Ostrobothnia |
| Wintel | Uusimaa |
| Winwap Technologies | Uusimaa |
| Wirepas Ltd | |
| WithSecure | |
| WMHost | Uusimaa |
| Wolt | Uusimaa |
| Woodly Oy | |
| WordDive Ltd | |
| Work Pilots Oy | |
| Workfellow Oy | |
| WOT Services Ltd | Uusimaa |
| Wunderdog | Uusimaa |
| Wysiwyg Oy | Pirkanmaa |
| xEdu | |
| Xfold Imaging Oy | |
| Xiphera Ltd | |
| XR Presence Oy | |
| Yahaha Studios | |
| Yango | |
| YellowMay Ltd | |
| Yepzon | |
| Yetitablet | Uusimaa |
| Yield Systems | |
| Yield Systems | |
| Yogaia Oy | |
| Yousician Oy | |
| Yrkeshögskolan Novia | Ostrobothnia |
| Z Vector | |
| Zadaa | |
| Zapflow Ltd | |
| Zefort | |
| Zen Treasury Ltd | |
| Zenex Computing Oy | Uusimaa |
| ZenTreasury Ltd | Uusimaa |
| Zero Gravity | |
| ZirooPay | |
| Zoan Corporation | Uusimaa |
| Zoner | Uusimaa |
| Zora Biosciences Oy | |
| Zure Oy | Uusimaa |
| Zyfra | Uusimaa |