| LanguageTool | Brandenburg |
| Lano Software GmbH | Berlin |
| LANtana Gesellschaft für angewandte Daten- und Netzwerktechnik mbH | Schleswig-Holstein |
| Lanworks AG | North Rhine-Westphalia |
| LAPP oHG | Baden-Württemberg |
| LargeNet GmbH | |
| LAS-CAD GmbH | Bavaria |
| LASA - Ihr IT-Systemhaus GmbH | Saarland |
| Lascar Electronics P&V GmbH | Baden-Württemberg |
| Laser Zentrum Hannover e. V. | |
| Laserhub GmbH | |
| LaserSoft Imaging AG | Schleswig-Holstein |
| Lasso Ingenieurgesellschaft mbH | Baden-Württemberg |
| Last Mile Semiconductor GmbH | |
| Laszlo Korte | |
| Lateral GmbH | |
| Lateral GmbH | |
| LaTeX Project | Rhineland-Palatinate |
| Laut und Schoen GmbH | |
| Lauterbach GmbH | Mecklenburg-Vorpommern |
| Lauterbach Verfahrenstechnik GmbH | Baden-Württemberg |
| Lautsprecher Teufel GmbH | Berlin |
| LautundKlar GmbH | Bavaria |
| Lawtechgroup GmbH | |
| Laya Technologies GmbH | |
| Layer 2 GmbH | Hamburg |
| Layer Software GmbH | |
| Lazy Ants | |
| LB Engineering GbR | Berlin |
| LB.systems GmbH | |
| LBBW Venture Capital GmbH | Baden-Württemberg |
| LBD-Beratungsgesellschaft mbH | Berlin |
| LBP Software GmbH | Bavaria |
| LBS | |
| LCD media GmbH | Hamburg |
| LCI Systems GmbH | Hamburg |
| LCS Computer Service GmbH | Brandenburg |
| LCTech GmbH | |
| Le Bihan Consulting GmbH | Hesse |
| LEA Partners GmbH | |
| LEAD Academy gGmbH | |
| LEAD Consult LC GmbH | |
| lead.online GmbH | |
| Leaders for Climate Action | |
| Leadfeeder | |
| Leaf Digital | |
| Leaf Systems GmbH | Baden-Württemberg |
| Leaftech GmbH | |
| Lean Apps GmbH | |
| LeanIX GmbH | North Rhine-Westphalia |