| 1000045304 | Cstrider AB | SE-Sweden | Company | Yes | Alumnus | ESA BIC Sweden | |
| 1000048178 | Cuatro Group AS | NO-Norway | Company | Yes | Incubatee | ESA BIC Norway | |
| 1000044717 | Curf | BE-Belgium | Company | Yes | Alumnus | ESA BIC Belgium | |
| 1000031834 | CybELE LAWGICAL LDA | PT-Portugal | Company | Yes | Alumnus | ESA BIC Portugal | |
| 1000050944 | Cyberlope GmbH | DE-Germany | Company | Yes | Incubatee | ESA BIC Hessen | |
| 1000031188 | CYSEC | CH-Switzerland | Company | Yes | Alumnus | ESA BIC Switzerland | |
| 1000045725 | Daisytuner UG (haftungsbeschränkt) | DE-Germany | Company | Yes | Alumnus | ESA BIC Hessen | |
| 1000041477 | Danish Graphene ApS | DK-Denmark | Company | Yes | Alumnus | ESA BIC Denmark | |
| 1000042185 | Dartsat s.r.o. | CZ-Czech Republic | Company | Yes | Alumnus | ESA BIC Czech Republic | |
| 1000042417 | Data Machine Intelligence Solutions GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Bavaria | |
| 1000031516 | Datarella GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Hessen | |
| 1000028518 | DATelite | HU-Hungary | Company | Yes | Alumnus | ESA BIC Hungary | |
| 1000037924 | DBSpace S.R.L. | IT-Italy | Company | Yes | Alumnus | ESA BIC Turin | |
| 1000043785 | Deep LS GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Hessen | |
| 1000030959 | Deep Planet Ltd. | GB-United Kingdom | Company | Yes | Alumnus | ESA BIC UK | |
| 1000042174 | DeltaOrbit GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Bavaria | |
| 1000040724 | deltaVision GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Bavaria | |
| 1000049320 | DEPLOTIC S.R.L. | IT-Italy | Company | Yes | Incubatee | ESA BIC Turin | |
| 1000041280 | Descoberta Ofuscante LDA | PT-Portugal | Company | Yes | Alumnus | ESA BIC Portugal | |
| 1000036498 | Detektia Earth Surface Monitoring S.L. | ES-Spain | Company | Yes | Alumnus | ESA BIC Madrid Region | |