| La Connect GmbH & Co. KG | Thuringia |
| La Famiglia GmbH | |
| la red GmbH | |
| LABanalytics GmbH | Thuringia |
| Label Software Gerald Bax GmbH | North Rhine-Westphalia |
| Labforward GmbH | |
| Labiotech UG | |
| Labmaite GmbH | |
| Labor 77 | Hesse |
| LAbor BioMedical Technologies GmbH | |
| LABOR – Agentur für moderne Kommunikation GmbH | Rhineland-Palatinate |
| Labour Digital GmbH | |
| Labseven | Thuringia |
| LabTwin GmbH | |
| Labvantage - Biomax GmbH | |
| Lachmann Project | Saxony |
| Lackwerke Peters GmbH & Co. KG | North Rhine-Westphalia |
| Lactocore Group | |
| laf.li | Berlin |
| LAGO Software GmbH | Bavaria |
| Lagodka Software Projekte GmbH | |
| Lahr IT-Systeme GmbH | |
| LAION gemeinnütziger e.V. | |
| LAKRIZZ | |
| Lalelu Media | North Rhine-Westphalia |
| Lambda Biologics GmbH | |
| Lambus GmbH | |
| Lampix | Hesse |
| LAN-Security Gesellschaft für Netzwerktechnik und -sicherheit mbH | |
| Lan4Play | Baden-Württemberg |
| LANCH GmbH | |
| LANCOM Systems GmbH | North Rhine-Westphalia |
| Land Software | Bavaria |
| LAND-DATA Eurosoft GmbH & Co. KG | Bavaria |
| Land-Data GmbH | Lower Saxony |
| Landauer Software | Bavaria |
| Landenhammer e.K. | Bavaria |
| Landeskrankenhaus | |
| landgraf-net.de | |
| Landolt-Computer | Hesse |
| Landrix Software GmbH & Co. KG | Saxony |
| Landschaftsverband Rheinland | |
| Lanes & Planes | |
| Lanes & Planes GmbH | |
| Lang & Schwarz Aktiengesellschaft | |
| Langdock GmbH | |
| Lange & Fendel Software GmbH | Bavaria |
| Lange-Electronic GmbH | Bavaria |
| Langfuse GmbH | |
| LangnaeseNetworks | Brandenburg |