| HERRWERTH + KNAFL GmbH | |
| Hertie School | Berlin |
| HERTLING GmbH & Co. KG | |
| Hesecco | Baden-Württemberg |
| heslab | Bavaria |
| Hessen Trade & Invest GmbH | Hesse |
| Hessische Ministerin für Digitale Strategie und Entwicklung | North Rhine-Westphalia |
| Hessler Solutions GmbH | |
| HETEC Datensysteme GmbH | Bavaria |
| HETKAMP GmbH | North Rhine-Westphalia |
| Hetzner Online GmbH | Bavaria |
| Heuer HARTSOFT GmbH | Lower Saxony |
| Heusch Boesefeldt | North Rhine-Westphalia |
| Hexafarms GmbH | |
| Hexal AG | |
| hey circle GmbH | |
| HeyCharge | |
| heyData GmbH | |
| Heyflow GmbH | |
| HeyFlutter.com | |
| HeyJobs GmbH | |
| Heylogin GmbH | |
| Heys IT-Service, Sven Heymann e.K. | Baden-Württemberg |
| HF-Technik Wenske GmbH | Bavaria |
| HFO Telecom AG | Bavaria |
| HfT-Leipzig | North Rhine-Westphalia |
| HH Datenverarbeitungs- und Beratungsgesellschaft mbH | Berlin |
| HH2E AG | |
| hhb Electronic GmbH | Bavaria |
| HHL Leipzig Graduate School of Management | |
| Hier Foods UG (haftungsbeschränkt) | Berlin |
| Hier.com | Berlin |
| High Performance GmbH | Hamburg |
| High Performance Space Structure Systems GmbH | |
| High Stake GmbH | |
| High-Mobility GmbH | |
| High-Tech Gründerfonds Management GmbH | North Rhine-Westphalia |
| High-Tech SeedLab | |
| HighLine Technology GmbH | |
| Hightech Summit | |
| Highway GmbH | Saxony |
| hijob GmbH | |
| Hiko Systems GmbH | |
| Hill-Commerce GmbH | North Rhine-Westphalia |
| Hiller + Hinken GmbH | Bremen |
| Hilscher Gesellschaft für Systemautomation mbH | Hesse |
| HILTES Software GmbH | Lower Saxony |
| Hiltron GmbH | |
| HIMA Paul Hildebrandt GmbH | |
| Himac Betriebsorganisation GmbH | Bavaria |