| HAL24K Labs | |
| HALIX B.V. | |
| Hallo | |
| Haltronic Elektro Installaties B.V. | Limburg |
| Hamaka | Utrecht |
| Hamwells Nederland B.V. | |
| Hanaro Europe B.V. | North Brabant |
| Hands on ICT | North Holland |
| Hands-On-Techniek | |
| Hannspree Europe Holdings B.V. | Limburg |
| Hanzehogeschool Groningen | Groningen |
| Happitech | South Holland |
| Happy Horizon | North Brabant |
| HappyHosting | North Brabant |
| Harddisk-recovery | South Holland |
| HardeSchijfDokter.nl | South Holland |
| Hardt B.V. | |
| Hardware.info | North Holland |
| hardwear.io | South Holland |
| Hartman Service Center B.V. | South Holland |
| HartmanDirect | North Holland |
| Harver B.V. | |
| Harvest Digital | North Holland |
| Haselhoff Groep | Utrecht |
| Hashtag Workmode | North Holland |
| HATCH B.V. | |
| Havinga Software | Gelderland |
| HAWA Internet Services | Utrecht |
| HB Internet Marketing | Friesland |
| hbit.nl | |
| HBSoftware B.V. | South Holland |
| HCC!hobbynet | North Holland |
| HCM Medical | |
| HCS Groep B.V. | |
| HD Services | Utrecht |
| HDL Works | Gelderland |
| hDMT | |
| Head Electronics B.V. | South Holland |
| Head Start Ventures | |
| Headcandy | Utrecht |
| HeadFirst | |
| Headnets | North Holland |
| Headsetwinkel | Utrecht |
| Health Valley Netherlands | |
| Healthy Workers | North Holland |
| Hedan Telematica | Gelderland |
| Heights Consultants B.V. | North Brabant |
| Heijiligers Computers | South Holland |
| Hekkelman I.T. | |
| Helin Data | South Holland |