| 1000039556 | HYVIATE GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Bavaria | |
| 1000034639 | Hytech-imaging | FR-France | Company | No | Alumnus | ESA BIC Nord France | |
| 1000045426 | Hypersonica GmbH | DE-Germany | Company | No | Incubatee | ESA BIC Bavaria | |
| 1000040850 | Hydromars AB | SE-Sweden | Company | No | Alumnus | ESA BIC Sweden | |
| 1000038482 | HYDRA SPACE SYSTEMS | ES-Spain | Company | Yes | Incubatee | ESA BIC Madrid Region | |
| 1000043405 | Hybrid Propulsion for Space | FR-France | Company | Yes | Alumnus | ESA BIC Sud France | |
| 1000044928 | Husenbeth Services UG (haftungsbeschränkt) | DE-Germany | Company | No | Incubatee | ESA BIC Hessen | |
| 1000045689 | Hula Technology GmbH | DE-Germany | Company | Yes | Incubatee | ESA BIC Bavaria | |
| 1000046217 | HoZe Solutions GmbH | DE-Germany | Company | Yes | Incubatee | ESA BIC North Rhine-Westphalia | |
| 1000031470 | HOSTmi GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Hessen | |
| 1000042191 | Horizon Microtechnologies Gmbh | DE-Germany | Company | No | Alumnus | ESA BIC Baden-Württemberg | |
| 1000040532 | HIPPARCOS S.R.L. | IT-Italy | Company | Yes | Alumnus | ESA BIC Turin | |
| 1000043090 | Hikos UAB | LT-Lithuania | Company | No | Alumnus | ESA BIC Lithuania | |
| 1000032900 | HeraSpace UG | DE-Germany | Company | No | Alumnus | ESA BIC Hessen | |
| 1000032429 | Heimdal Satellite Technologies AS | NO-Norway | Company | Yes | Alumnus | ESA BIC Norway | |
| 1000043205 | Hecto Drone ApS | DK-Denmark | Company | Yes | Alumnus | ESA BIC Denmark | |
| 1000038573 | HDES Service & Engineering BV | NL-Netherlands | Company | Yes | Alumnus | ESA BIC Noordwijk | |
| 1000043690 | HCP Sense GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Hessen | |
| 1000032423 | Hawa Dawa | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000042382 | HAT.tec GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |