| 1000033765 | Benenati & Edwards GbR | DE-Germany | Company | No | Alumnus | ESA BIC Baden Württemberg | |
| 1000033967 | Black Engine Aerospace GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Baden Württemberg | |
| 1000039625 | Blackpin GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Baden Württemberg | |
| 1000027748 | Blackwave GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Bavaria | |
| 1000037258 | boltzplatz - numerical plasma dynamics GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Baden Württemberg | |
| 1000026569 | Cadami GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Bavaria | |
| 1000041268 | CargoKite GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000033512 | CargoSteps GmbH & Co. KG | DE-Germany | Company | No | Alumnus | ESA BIC Hessen | |
| 1000039064 | Cavicore UG (haftungsbeschränkt) | DE-Germany | Company | Yes | Alumnus | ESA BIC Hessen | |
| 1000035335 | Celestial Space Technologies GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Bavaria | |
| 1000040241 | Cellgrid | DE-Germany | Company | Yes | Alumnus | ESA BIC North Rhine-Westphalia | |
| 1000042438 | CELUS GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000039469 | Cevotec GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000015579 | CLOUDEO AG | DE-Germany | Company | Yes | Alumnus | ESA BIC Bavaria | |
| 1000042381 | CM 1 GmbH | DE-Germany | Company | No | Incubatee | ESA BIC Bavaria | |
| 1000041863 | Coher Sense UG | DE-Germany | Company | Yes | Alumnus | ESA BIC Northern Germany | |
| 1000035883 | ConstellR GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Baden Württemberg | |
| 1000035240 | CORAmaps GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Hessen | |
| 1000046153 | cosy.green GmbH | DE-Germany | Company | Yes | Incubatee | ESA BIC Hessen | |
| 1000042115 | CSTREAM UG | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |