| 1000042721 | Linking Drones UG | DE-Germany | Company | Yes | Incubatee | ESA BIC Hessen | |
| 1000045431 | limknow GmbH & Co. KG | DE-Germany | Company | No | Alumnus | ESA BIC Baden-Württemberg | |
| 1000046738 | Lightnovo ApS | DK-Denmark | Company | No | Incubatee | ESA BIC Denmark | |
| 1000035890 | Lightly AG | CH-Switzerland | Company | Yes | Alumnus | ESA BIC Switzerland | |
| 1000038492 | LightCode Photonics | EE-Estonia | Company | Yes | Alumnus | ESA BIC Estonia | |
| 1000026860 | LIGENTEC | CH-Switzerland | Company | Yes | Alumnus | ESA BIC Switzerland | |
| 1000041119 | Liftero sp. z o.o. | PL-Poland | Company | Yes | Alumnus | ESA BIC Poland | |
| 1000030337 | LIFT ME OFF LIMITED | GB-United Kingdom | Company | No | Alumnus | ESA BIC UK | |
| 1000040861 | lifeline | BE-Belgium | Company | No | Alumnus | ESA BIC Belgium | |
| 1000041807 | LIDAX ELECTRO-OPTICAL SYSTEMS S.L. | ES-Spain | Company | No | Incubatee | ESA BIC Madrid Region | |
| 1000047798 | LEXION Ι Κ Ε | GR-Greece | Company | No | Incubatee | ESA BIC Greece | |
| 1000037874 | LEVITY UG (limited liability) | DE-Germany | Company | No | Alumnus | ESA BIC Northern Germany | |
| 1000042122 | levelQuantum s.r.l. | IT-Italy | Company | Yes | Incubatee | ESA BIC Turin | |
| 1000032288 | Let's Earth s.r.o. | CZ-Czech Republic | Company | No | Alumnus | ESA BIC Czech Republic | |
| 1000043583 | LETO SPACE GmbH | AT-Austria | Company | No | Alumnus | ESA BIC Austria | |
| 1000042667 | LEOBLUE | FR-France | Company | No | Incubatee | ESA BIC Sud France | |
| 1000013620 | LENS RESEARCH AND DEVELOPMENT | NL-Netherlands | Company | No | Alumnus | ESA BIC Noordwijk | |
| 1000042393 | lemvos GmbH | DE-Germany | Company | Yes | Incubatee | ESA BIC Bavaria | |
| 1000045668 | Lederer Peter Dipl.-Ing. | AT-Austria | Company | No | Incubatee | ESA BIC Austria | |
| 1000042717 | Leasi AS | NO-Norway | Company | No | Alumnus | ESA BIC Norway | |