| 1000046701 | Alpha Impulsion Italia SRL | IT-Italy | Company | Yes | Alumnus | ESA BIC Turin | |
| 1000041760 | AlongRoute Data IKE | GR-Greece | Company | Yes | Alumnus | ESA BIC Greece | |
| 1000045679 | allunderground GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000044526 | AllSpace UG (haftungsbeschränkt) | DE-Germany | Company | Yes | Alumnus | ESA BIC Hessen | |
| 1000046972 | AlgoNav UG (haftungsbeschränkt) | DE-Germany | Company | Yes | Incubatee | ESA BIC Hessen | |
| 1000031146 | ALEEGO s.r.o. | CZ-Czech Republic | Company | Yes | Alumnus | ESA BIC Czech Republic | |
| 1000030448 | Aldoria | FR-France | Company | Yes | Alumnus | ESA BIC Nord France | |
| 1000032443 | Alb Radmanufaktur GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Baden-Württemberg | |
| 1000042531 | ALATYR | FR-France | Company | Yes | Alumnus | ESA BIC Nord France | |
| 1000043254 | Aktyvus Photonics UAB | LT-Lithuania | Company | No | Alumnus | ESA BIC Lithuania | |
| 1000043636 | Akson Robotics ApS | DK-Denmark | Company | No | Alumnus | ESA BIC Denmark | |
| 1000047114 | AITHRA | FR-France | Company | Yes | Alumnus | ESA BIC Sud France | |
| 1000048102 | AirPlate ApS | DK-Denmark | Company | Yes | Alumnus | ESA BIC Denmark | |
| 1000041093 | AIRMO | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000027138 | Airgloss | IT-Italy | Company | No | Alumnus | ESA BIC Lazio | |
| 1000033635 | Airelectronics | ES-Spain | Company | No | Alumnus | ESA BIC Madrid Region | |
| 1000046548 | AirDodge AS | NO-Norway | Company | Yes | Alumnus | ESA BIC Norway | |
| 1000043316 | AIKOSPACE | FR-France | Company | Yes | Alumnus | ESA BIC Sud France | |
| 1000042212 | AHYRES HARDWARE AND SOFTWARE S.L. | ES-Spain | Company | No | Alumnus | ESA BIC Madrid Region | |
| 1000046775 | AgroSync, UAB | LT-Lithuania | Company | No | Alumnus | ESA BIC Lithuania | |