| 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 | Gelderland |
| 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 |
| Hello Energy | South Holland |
| Helvoirt Automatisering B.V. | North Brabant |
| Henchman B.V. | |
| Henk Muis ICT Consultancy | South Holland |
| henQ | North Holland |
| Hercules Pharmaceuticals | South Holland |
| HERE Technologies | North Brabant |
| Hero Balancer | North Holland |
| HERTZinger B.V. | Utrecht |
| Heutink ICT | Overijssel |
| Heuvel Marketing | Gelderland |
| Hexagon | Overijssel |
| Hexon | Gelderland |
| Heynen B.V. | Limburg |
| HI-Computers | Overijssel |
| Hiber B.V. | North Holland |
| Hieper Software | North Holland |
| HIFLEX Automatiseringstechniek B.V. | South Holland |