| habets | firmendesign | North Rhine-Westphalia |
| Habyt GmbH | |
| Hachmann-IT | North Rhine-Westphalia |
| Hack Institute | North Rhine-Westphalia |
| HACK-CMP | |
| Hackathon Stuttgart | Baden-Württemberg |
| HACKER - DatenTechnik | Rhineland-Palatinate |
| Häcker Automation GmbH | Thuringia |
| Hackerspace FFM | Hesse |
| Hackly GmbH i.L. | |
| Haensch Business School GmbH | |
| Haertel-Softweb | North Rhine-Westphalia |
| HafenCity Universität Hamburg | |
| hafencity.dev GmbH | |
| HAG-PC-Soft | Lower Saxony |
| hagel IT-Services GmbH | Hamburg |
| hagel IT-Services GmbH | |
| Hahn GmbH | Bavaria |
| Hahn-Schickard-Gesellschaft für angewandte Forschung e.V. | |
| Haifischbar Softwareentwicklung Christian Stüben | North Rhine-Westphalia |
| Haiilo GmbH | |
| Haist GmbH | Baden-Württemberg |
| Haka Elektronik-Leiterplatten GmbH | Saarland |
| HAKOM Enterprise Communications GmbH | Bavaria |
| Hakuna GmbH | |
| halbautomaten Kommunikationsdesign GmbH | |
| Hallesche Linux Users Group | Saxony-Anhalt |
| Halocline GmbH & Co. KG | |
| Halstenbach ACT GmbH | North Rhine-Westphalia |
| Hamann IT-Systeme | Bavaria |
| Hamann Software GmbH | Hesse |
| Hamburg Business | |
| Hamburg Coding School | |
| Hamburg Consulting Group | |
| Hamburg Innovation Summit | |
| Hamburg Invest | |
| Hamburg Kreativ Gesellschaft | |
| Hamburg Mobile Computing UG (haftungsbeschränkt) & Co. KG | Hamburg |
| Hamburg School of Business Administration | Hamburg |
| Hamburg Startups | |
| Hamburg Top-Level-Domain GmbH | |
| Hamburg University of Applied Sciences | |
| Hamburg-Webart | |
| Hamburg@work GFM mbH | |
| Hamburger Computernotdienst | Hamburg |
| Hamburger Fern-Hochschule gemeinnützige GmbH | |
| Hamburger Software GmbH & Co. KG | Hamburg |
| Hamburgnet e.K. | |
| Hameln Pharma GmbH | |
| Hanau Linux User Group | Hesse |