| 1000046495 | Applied Atomics | GB-United Kingdom | Company | Yes | Alumnus | ESA BIC UK | |
| 1000044634 | Applied Innovative Methods | ES-Spain | Company | No | Alumnus | ESA BIC Madrid Region | |
| 1000019969 | APR TECHNOLOGIES AB | SE-Sweden | Company | No | Alumnus | ESA BIC Sweden | |
| 1000044884 | AQ ANALYTICS, LDA | PT-Portugal | Company | Yes | Alumnus | ESA BIC Portugal | |
| 1000045785 | Aquaguard Technologies | SE-Sweden | Company | Yes | Alumnus | ESA BIC Sweden | |
| 1000025109 | ARCA DYNAMICS | IT-Italy | Company | Yes | Alumnus | ESA BIC Lazio | |
| 1000027648 | Archangel Imaging Ltd. | GB-United Kingdom | Company | No | Alumnus | ESA BIC UK | |
| 1000039533 | Archimethod SA | CH-Switzerland | Company | No | Alumnus | ESA BIC Switzerland | |
| 1000040396 | ArcSpace | FR-France | Company | Yes | Alumnus | ESA BIC Nord France | |
| 1000044646 | Arctic Farming Oy | FI-Finland | Company | No | Alumnus | ESA BIC Finland | |
| 1000033477 | Arctic Space Technologies AB | SE-Sweden | Company | Yes | Alumnus | ESA BIC Sweden | |
| 1000041354 | ARE23 GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000034058 | AridGreen Technologies | DE-Germany | Company | No | Alumnus | ESA BIC Baden-Württemberg | |
| 1000036800 | Arkadia Aerospace Propulsion & Transportation Systems SL | ES-Spain | Company | Yes | Alumnus | ESA BIC Valencia | |
| 1000040918 | ARKANE | FR-France | Company | Yes | Alumnus | ESA BIC Nord France | |
| 1000039298 | Armor Arsenal | FR-France | Company | Yes | Alumnus | ESA BIC Nord France | |
| 1000045324 | Arnell GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000040535 | Arribes Enlightment S.L. | ES-Spain | Company | Yes | Incubatee | ESA BIC Madrid Region | |
| 1000044878 | Arrive Mobility UG (haftungsbeschränkt) & Co. KG | DE-Germany | Company | Yes | Alumnus | ESA BIC Baden-Württemberg | |
| 1000044109 | ART O.T.F. S.R.L. | IT-Italy | Company | No | Alumnus | ESA BIC Lazio | |