| 1000044989 | makeMINT UG (haftungsbeschraenkt) & Co. KG | DE-Germany | Company | No | Alumnus | ESA BIC Baden-Württemberg | |
| 1000032837 | Magdrive | GB-United Kingdom | Company | No | Alumnus | ESA BIC UK | |
| 1000026622 | Madrid Space Europe S.L. | ES-Spain | Company | Yes | Alumnus | ESA BIC Madrid Region | |
| 1000039513 | Lympik GmbH | AT-Austria | Company | Yes | Alumnus | ESA BIC Austria | |
| 1000031187 | LuxFlux GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Baden Württemberg | |
| 1000038594 | Lunasa Ltd. | GB-United Kingdom | Company | No | Alumnus | ESA BIC UK | |
| 1000036465 | Lunar Resources Registry UG | DE-Germany | Company | No | Alumnus | ESA BIC Hessen | |
| 1000034722 | Lumiphase | CH-Switzerland | Company | Yes | Alumnus | ESA BIC Switzerland | |
| 1000031799 | Luminovo GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000037289 | Lumi Space | GB-United Kingdom | Company | Yes | Alumnus | ESA BIC UK | |
| 1000043866 | Ludifica srl | BE-Belgium | Company | No | Alumnus | ESA BIC Belgium | |
| 1000033894 | L-One Systems GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Hessen | |
| 1000044240 | LOKORA GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Baden-Württemberg | |
| 1000045830 | LOKI s.r.l. | IT-Italy | Company | Yes | Incubatee | ESA BIC Turin | |
| 1000047260 | Lokahi Technology Systems FlexCo | AT-Austria | Company | Yes | Incubatee | ESA BIC Austria | |
| 1000045141 | LogBook AG | CH-Switzerland | Company | Yes | Incubatee | ESA BIC Switzerland | |
| 1000041160 | Lodestar Space Ltd | GB-United Kingdom | Company | Yes | Alumnus | ESA BIC UK | |
| 1000033953 | Loctio P.C. | GR-Greece | Company | Yes | Alumnus | ESA BIC Greece | |
| 1000045064 | LirOptic Limited | IE-Ireland | Company | No | Incubatee | ESA BIC Ireland | |
| 1000032753 | LIQUIFER Space Systems GmbH | DE-Germany | Company | Yes | Incubatee | ESA BIC Northern Germany | |