| 1000049878 | GreenGuard Automation ApS | DK-Denmark | Company | No | Incubatee | ESA BIC Denmark | |
| 1000032775 | Greenlytics AB | SE-Sweden | Company | No | Alumnus | ESA BIC Sweden | |
| 1000031608 | Greenspider gmbh | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000043440 | GyroPlant Limited | GB-United Kingdom | Company | No | Alumnus | ESA BIC UK | |
| 1000039955 | HALO Technologies UG (haftungsbeschränkt) | DE-Germany | Company | No | Alumnus | ESA BIC North Rhine-Westphalia | |
| 1000052343 | HAPS-com ApS | DK-Denmark | Company | No | Incubatee | ESA BIC Denmark | |
| 1000048547 | Hard and Software Technologies UG | DE-Germany | Company | No | Incubatee | ESA BIC Hessen | |
| 1000042382 | HAT.tec GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000048235 | Havguard AS | NO-Norway | Company | No | Alumnus | ESA BIC Norway | |
| 1000032423 | Hawa Dawa | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000032429 | Heimdal Satellite Technologies AS | NO-Norway | Company | No | Alumnus | ESA BIC Norway | |
| 1000032900 | HeraSpace UG | DE-Germany | Company | No | Alumnus | ESA BIC Hessen | |
| 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 | |
| 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 | |
| 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 | |