| 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 | |
| 1000027465 | ColomboSky s.r.l. | IT-Italy | Company | No | Alumnus | ESA BIC Lazio | |
| 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 | |
| 1000039329 | Corintis SA | CH-Switzerland | Company | No | Alumnus | ESA BIC Switzerland | |
| 1000031834 | CybELE LAWGICAL LDA | PT-Portugal | Company | No | Alumnus | ESA BIC Portugal | |
| 1000042623 | cyclebee GmbH | AT-Austria | Company | No | Incubatee | ESA BIC Austria | |
| 1000029530 | Deep Blue Globe UG (Halftungsbeschrankt) | DE-Germany | Company | No | Alumnus | ESA BIC Hessen | |
| 1000034007 | DELOX - INVESTIGAÇÃO, PROCESSOS E EQUIPAMENTOS CIENTÍFICOS, LDA | PT-Portugal | Company | No | Alumnus | ESA BIC Portugal | |
| 1000039230 | Diramics AG | CH-Switzerland | Company | No | Alumnus | ESA BIC Switzerland | |
| 1000041643 | DLTEO GmbH | AT-Austria | Company | No | Alumnus | ESA BIC Austria | |
| 1000037252 | DocTec | AT-Austria | Company | No | Alumnus | ESA BIC Austria | |
| 1000021709 | D-ORBIT PT | PT-Portugal | Company | No | Alumnus | ESA BIC Portugal | |
| 1000028447 | Drone Harmony AG | CH-Switzerland | Company | No | Alumnus | ESA BIC Switzerland | |
| 1000037727 | Drone Hopper | ES-Spain | Company | No | Alumnus | ESA BIC Madrid Region | |
| 1000031983 | Dynamic Space Technologies AS | NO-Norway | Company | No | Alumnus | ESA BIC Norway | |
| 1000041734 | Ecosmic | NL-Netherlands | Company | No | Incubatee | ESA BIC Noordwijk | |
| 1000036979 | Ekofolio Sarl | LU-Luxembourg | Company | No | Alumnus | ESA BIC Denmark | |