| 1000037990 | Atheras Analytics | GB-United Kingdom | Company | Yes | Alumnus | ESA BIC UK | |
| 1000037196 | Atla.ai | DK-Denmark | Company | Yes | Alumnus | ESA BIC Denmark | |
| 1000045235 | ATMAKE ADVANCED MANUFACTURING S.L. | ES-Spain | Company | Yes | Incubatee | ESA BIC Barcelona | |
| 1000038858 | Atmos Space Cargo GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Baden Württemberg | |
| 1000012370 | ATMOSPHERE GMBH | DE-Germany | Company | Yes | Alumnus | ESA BIC Bavaria | |
| 1000042301 | Aurora Avionics Ltd | GB-United Kingdom | Company | Yes | Incubatee | ESA BIC UK | |
| 1000031985 | AURORA PROPULSION TECHNOLOGIES OY | FI-Finland | Company | Yes | Alumnus | ESA BIC Finland | |
| 1000040985 | Auxsys GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC North Rhine-Westphalia | |
| 1000044014 | AVES Reality GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Bavaria | |
| 1000043777 | AviSense.AI technovlastos P.C. | GR-Greece | Company | Yes | Incubatee | ESA BIC Greece | |
| 1000035458 | Avoin | FI-Finland | Company | Yes | Alumnus | ESA BIC Finland | |
| 1000035399 | AWAKE.AI | FI-Finland | Company | Yes | Alumnus | ESA BIC Finland | |
| 1000041512 | AZUL HEREDITÁRIO, LDA | PT-Portugal | Company | Yes | Alumnus | ESA BIC Portugal | |
| 1000046350 | Be MarS Aps | DK-Denmark | Company | Yes | Incubatee | ESA BIC Denmark | |
| 1000040994 | BETADYNAMIQ S.R.L. | IT-Italy | Company | Yes | Incubatee | ESA BIC Lazio | |
| 1000030473 | Big Terra Alpha | CZ-Czech Republic | Company | Yes | Alumnus | ESA BIC Czech Republic | |
| 1000039610 | Bitrezus P.C. | GR-Greece | Company | Yes | Alumnus | ESA BIC Greece | |
| 1000016283 | BLACKSHORE B.V. | NL-Netherlands | Company | Yes | Alumnus | ESA BIC Noordwijk | |
| 1000027748 | Blackwave GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Bavaria | |
| 1000037258 | boltzplatz - numerical plasma dynamics GmbH | DE-Germany | Company | Yes | Alumnus | ESA BIC Baden Württemberg | |