| Hakema Solutions Oy | |
| Haltian | |
| Hämeen ammattikorkeakoulu | |
| Hanken School of Economics | |
| Happeo | Uusimaa |
| HappyOrNot Ltd | |
| HappySignals | |
| Hardmark | Uusimaa |
| Härkätien Puhelin Oy | Southwest Finland |
| Hasan & Partners | |
| HD SofT Oy | |
| HeadQ | |
| Health Capital Helsinki | |
| Health Incubator Helsinki | |
| Hel-Service Oy | |
| Helkama Bica Oy | Uusimaa |
| Hello Creative Oy | |
| Helsingin Suomalainen Yhteiskoulu | |
| Helsinki Institute for Information Technology | Uusimaa |
| Helsinki Institute of Physics | |
| Helsinki University of Technology - Laboratory for Theoretical Computer Science | Uusimaa |
| Helsinki XR Center | |
| Herman IT | Kainuu |
| Hetkiai | Uusimaa |
| Heusala Group Oy | |
| HeyDay Ltd | Uusimaa |
| HiQ Oy | |
| HitSeed | |
| HMD Global | Uusimaa |
| Högskolan på Åland | |
| Holla Online Oy | |
| Holvi | |
| Hookle, Inc. | Uusimaa |
| Hotellinx Systems Ltd | Southwest Finland |
| Houston Analytics Ltd | |
| Howspace | |
| Hoxhunt | |
| HP Finland Oy | Uusimaa |
| Hublet Oy | |
| Hukka AI Oy | |
| Huld | |
| Humak | |
| HVR Cardio Oy | |
| HVR Cardio Oy | |
| Hycamite TCD Technologies Oy | |
| HypeHype | |
| Hyperion Robotics Oy | |
| HyTest Ltd | |
| Icebreaker.vc | |
| ICEYE | |