| Luckycloud GmbH | |
| LuConDa GmbH & Co. KG | Saxony |
| lucrid Holding GmbH | |
| Ludwig-Maximilians-Universität München | Bavaria |
| Ludwig-Maximilians-Universität München - Entrepreneurship Center | Bavaria |
| Ludwig-Maximilians-Universität München - Innovation & Entrepreneurship Center | Bavaria |
| Ludwig-Maximilians-Universität München - Institut für Digitales Management und Neue Medien | Bavaria |
| Ludwig-Maximilians-Universität München - Institut für Informatik | |
| Ludwig-Maximilians-Universität München - Mathematische Institut | |
| Ludwig-Maximilians-Universität München - Mathematisches Institut | Bavaria |
| Ludwig-Maximilians-Universität München - QAR-Lab – Quantum Applications and Research Laboratory | Bavaria |
| lufed IT GmbH | Bavaria |
| Luftfahrt-Bundesamt | |
| Lufthansa Industry Solutions | |
| Lufthansa Systems | Hesse |
| LUG Albtal | Baden-Württemberg |
| LUG Flensburg e.V. | Schleswig-Holstein |
| LUG-Balista Hamburg e.V. | Hamburg |
| Lugauer Software | North Rhine-Westphalia |
| Lugmoe GNU/Linux User Group Mönchengladbach | North Rhine-Westphalia |
| LUKA netconsult GmbH | Hesse |
| Lukas Oppermann | Berlin |
| LUKSO Blockchain GmbH | |
| LUMA Automatisierungstechnik GmbH | North Rhine-Westphalia |
| Lumberg Holding GmbH & Co. KG | North Rhine-Westphalia |
| Lumenaza GmbH | |
| LumenVox GmbH | Bavaria |
| Lumics GmbH | Berlin |
| Lumiform GmbH | |
| Luminea IT Services GmbH | Bavaria |
| Luminovo GmbH | |
| Lumoview Building Analytics GmbH | |
| Lumoview Building Analytics GmbH | |
| Luna Electronic GmbH | North Rhine-Westphalia |
| luna-park GmbH | North Rhine-Westphalia |
| Lunar Martech Solutions GmbH | |
| Lunar Ventures | |
| Lunar Ventures | |
| Lunaweb GmbH | |
| Lünendonk GmbH | Bavaria |
| Lunz Computersysteme AG | Bavaria |
| LUPCOM media GmbH | Mecklenburg-Vorpommern |
| Lupiter GmbH | |
| Lupus Imaging & Media GmbH & Co. KG | North Rhine-Westphalia |
| Lupus NetWeb | Bavaria |
| LUPUS-Electronics GmbH | Rhineland-Palatinate |
| LÜTH & DÜMCHEN Automatisierungsprojekt GmbH | Berlin |
| Lüth IT | |
| Lutherische Theologische Hochschule | |
| Lutz & Grub AG | Baden-Württemberg |