| 1000041093 | AIRMO | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000032443 | Alb Radmanufaktur GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Baden-Württemberg | |
| 1000046972 | AlgoNav UG (haftungsbeschränkt) | DE-Germany | Company | Yes | Incubatee | ESA BIC Hessen | |
| 1000044526 | AllSpace UG (haftungsbeschränkt) | DE-Germany | Company | Yes | Alumnus | ESA BIC Hessen | |
| 1000045679 | allunderground GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000046202 | Alteva Technologies GmbH | DE-Germany | Company | No | Alumnus | ESA BIC North Rhine-Westphalia | |
| 1000013915 | ANavS GMBH | DE-Germany | Company | Yes | Alumnus | ESA BIC Bavaria | |
| 1000048046 | Aperio Space Technologies GmbH | DE-Germany | Company | Yes | Incubatee | ESA BIC Hessen | |
| 1000041354 | ARE23 GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000034058 | AridGreen Technologies | DE-Germany | Company | No | Alumnus | ESA BIC Baden-Württemberg | |
| 1000045324 | Arnell GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000044878 | Arrive Mobility UG (haftungsbeschränkt) & Co. KG | DE-Germany | Company | Yes | Alumnus | ESA BIC Baden-Württemberg | |
| 1000042602 | Asana Cat UG (haftungsbeschränkt) | DE-Germany | Company | Yes | Alumnus | ESA BIC Hessen | |
| 1000048463 | Asterio Technology GmbH | DE-Germany | Company | Yes | Incubatee | ESA BIC Bavaria | |
| 1000047650 | Astra Labs GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Bavaria | |
| 1000020975 | ASTRIONICS GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000030745 | Astronautin GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Northern Germany | |
| 1000035927 | asvin | DE-Germany | Company | No | Alumnus | ESA BIC Baden-Württemberg | |
| 1000037018 | Atlas Aero GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000038858 | Atmos Space Cargo GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Baden-Württemberg | |