| Holst Centre | North Brabant |
| Homerun | |
| Homespring | |
| HoneyTree | |
| Horeko B.V. | |
| Hortec B.V. | Overijssel |
| Hostage | |
| HostCircle B.V. | |
| Hosting Katwijk | |
| Hosting.nl | |
| Hosting2GO B.V. | North Brabant |
| Hostingpower Internet Services B.V. | North Brabant |
| Hostingweb | |
| Hostnet B.V. | North Holland |
| Hotelchamp | North Holland |
| Hoteliers.com | North Holland |
| Hotmart | North Holland |
| Hovotech | |
| HowTo-Outlook | North Holland |
| HPE Growth Capital | North Holland |
| HQ Pack B.V. | |
| HSBC Continental Europe, The Netherlands | |
| HSO | North Holland |
| HTA Software | Utrecht |
| HTML5 Showcase | Flevoland |
| HTX automatisering | Groningen |
| HUB Organoids | |
| Hubrecht Institute | |
| Hudson Cybertec | |
| Huigsloot Robotics B.V. | South Holland |
| Huijzer Components | North Holland |
| Human-Software | North Holland |
| HuRis | North Brabant |
| Husense B.V. | |
| HUSS B.V. | |
| HvH | South Holland |
| HVR Software B.V. | North Holland |
| Hyarchis | |
| Hybrid Web Solutions | South Holland |
| Hybridize Therapeutics | |
| Hycult Biotech | North Brabant |
| Hydraloop | Friesland |
| HyET Group | |
| HyGear | |
| Hypherdata | North Holland |
| Hyves Games | |
| HZ University of Applied Sciences | |
| I'tension B.V. | Overijssel |
| i-Aspect B.V. | Utrecht |
| i-Concept Internetworks B.V. | South Holland |