| 1000031818 | CANARD DRONES SL | ES-Spain | Company | No | Alumnus | ESA BIC Madrid Region | |
| 1000034828 | Capra Robotics ApS | DK-Denmark | Company | Yes | Alumnus | ESA BIC Denmark | |
| 1000034038 | Captiks | IT-Italy | Company | No | Alumnus | ESA BIC Lazio | |
| 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 | |
| 1000034045 | Centrale Valutativa | IT-Italy | Company | Yes | Alumnus | ESA BIC Lazio | |
| 1000039469 | Cevotec GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000032787 | CHEXS | DK-Denmark | Company | No | Alumnus | ESA BIC Denmark | |
| 1000034163 | Circuits Integrated Hellas IKE | GR-Greece | Company | No | Alumnus | ESA BIC Greece | |
| 1000039016 | ClearSky Imagery ApS | DK-Denmark | Company | Yes | Alumnus | ESA BIC Denmark | |
| 1000030383 | ClearSpace SA | CH-Switzerland | Company | Yes | Alumnus | ESA BIC Switzerland | |
| 1000035121 | CLOUD SIGNALS | GR-Greece | Company | Yes | Alumnus | ESA BIC Greece | |
| 1000015579 | CLOUDEO AG | DE-Germany | Company | Yes | Alumnus | ESA BIC Bavaria | |
| 1000036987 | Coactum SA | CH-Switzerland | Company | Yes | Alumnus | ESA BIC Switzerland | |
| 1000041379 | COBOT Dynamics gmbh | AT-Austria | Company | Yes | Alumnus | ESA BIC Austria | |
| 1000027465 | ColomboSky s.r.l. | IT-Italy | Company | No | Alumnus | ESA BIC Lazio | |
| 1000038069 | CompPair Technologies Ltd | CH-Switzerland | Company | Yes | Alumnus | ESA BIC Switzerland | |
| 1000039220 | condenZero | CH-Switzerland | Company | No | Alumnus | ESA BIC Switzerland | |
| 1000034538 | Connect Robotics (CRSA - Connect Robotics Sistemas Autónomos, Lda.) | PT-Portugal | Company | No | Alumnus | ESA BIC Portugal | |