| 1000043583 | LETO SPACE GmbH | AT-Austria | Company | No | Alumnus | ESA BIC Austria | |
| 1000032288 | Let's Earth s.r.o. | CZ-Czech Republic | Company | No | Alumnus | ESA BIC Czech Republic | |
| 1000037874 | LEVITY UG (limited liability) | DE-Germany | Company | No | Alumnus | ESA BIC Northern Germany | |
| 1000040861 | lifeline | BE-Belgium | Company | No | Alumnus | ESA BIC Belgium | |
| 1000030337 | LIFT ME OFF LIMITED | GB-United Kingdom | Company | No | Alumnus | ESA BIC UK | |
| 1000041119 | Liftero sp. z o.o. | PL-Poland | Company | Yes | Alumnus | ESA BIC Poland | |
| 1000026860 | LIGENTEC | CH-Switzerland | Company | Yes | Alumnus | ESA BIC Switzerland | |
| 1000038492 | LightCode Photonics | EE-Estonia | Company | Yes | Alumnus | ESA BIC Estonia | |
| 1000035890 | Lightly AG | CH-Switzerland | Company | Yes | Alumnus | ESA BIC Switzerland | |
| 1000045431 | limknow GmbH & Co. KG | DE-Germany | Company | No | Alumnus | ESA BIC Baden-Württemberg | |
| 1000033953 | Loctio P.C. | GR-Greece | Company | Yes | Alumnus | ESA BIC Greece | |
| 1000041160 | Lodestar Space Ltd | GB-United Kingdom | Company | Yes | Alumnus | ESA BIC UK | |
| 1000044240 | LOKORA GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Baden-Württemberg | |
| 1000033894 | L-One Systems GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Hessen | |
| 1000043866 | Ludifica srl | BE-Belgium | Company | No | Alumnus | ESA BIC Belgium | |
| 1000037289 | Lumi Space | GB-United Kingdom | Company | Yes | Alumnus | ESA BIC UK | |
| 1000031799 | Luminovo GmbH | DE-Germany | Company | No | Alumnus | ESA BIC Bavaria | |
| 1000034722 | Lumiphase | CH-Switzerland | Company | Yes | Alumnus | ESA BIC Switzerland | |
| 1000036465 | Lunar Resources Registry UG | DE-Germany | Company | No | Alumnus | ESA BIC Hessen | |
| 1000038594 | Lunasa Ltd. | GB-United Kingdom | Company | No | Alumnus | ESA BIC UK | |