| 1000042926 | HETWA | FR-France | Company | Yes | Alumnus | ESA BIC Sud France | |
| 1000042833 | Hikade Technologies s.r.o. | CZ-Czech Republic | Company | No | Incubatee | ESA BIC Czech Republic | |
| 1000043090 | Hikos UAB | LT-Lithuania | Company | No | Alumnus | ESA BIC Lithuania | |
| 1000040532 | HIPPARCOS S.R.L. | IT-Italy | Company | No | Alumnus | ESA BIC Turin | |
| 1000046079 | Hispansion Works, S.L. | ES-Spain | Company | Yes | Incubatee | ESA BIC Madrid Region | |
| 1000042191 | Horizon Microtechnologies Gmbh | DE-Germany | Company | No | Alumnus | ESA BIC Baden-Württemberg | |
| 1000045166 | Horizon Space | FR-France | Company | No | Alumnus | ESA BIC Nord France | |
| 1000031470 | HOSTmi GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Hessen | |
| 1000046217 | HoZe Solutions GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC North Rhine-Westphalia | |
| 1000045689 | Hula Technology GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Bavaria | |
| 1000049786 | HVsys Testing UG (haftungsbeschränkt) | DE-Germany | Company | No | Incubatee | ESA BIC Hessen | |
| 1000043405 | Hybrid Propulsion for Space | FR-France | Company | No | Alumnus | ESA BIC Sud France | |
| 1000042879 | Hybrogines | FR-France | Company | No | Alumnus | ESA BIC Nord France | |
| 1000038482 | HYDRA SPACE SYSTEMS | ES-Spain | Company | Yes | Alumnus | ESA BIC Madrid Region | |
| 1000048757 | HydroGENesis s.r.o. | CZ-Czech Republic | Company | Yes | Incubatee | ESA BIC Czech Republic | |
| 1000040850 | Hydromars AB | SE-Sweden | Company | No | Alumnus | ESA BIC Sweden | |
| 1000047048 | Hydronaut Project | CZ-Czech Republic | Company | Yes | Alumnus | ESA BIC Czech Republic | |
| 1000046457 | Hyperpath Limited | IE-Ireland | Company | Yes | Incubatee | ESA BIC Ireland | |
| 1000051661 | Hyperplan | FR-France | Company | No | Alumnus | ESA BIC Sud France | |
| 1000045426 | Hypersonica GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |