| GK Software SE | |
| GKC GmbH | |
| GL Consult design & Development GmbH | Bavaria |
| GLAESS Software & Automation GmbH | |
| Glas AG | Hesse |
| GlassDollar GmbH | |
| GlassFlow GmbH | |
| GLASWALD Informatik GmbH | Saxony |
| Global Access Internet Services GmbH | Bavaria |
| Global Climate Changer GmbH | |
| Global Commerce Technologies | |
| Global Communication Services GmbH | |
| Global Components GmbH | Bavaria |
| Global Entrepreneurship Summer School | Bavaria |
| Global Information Distribution GmbH | North Rhine-Westphalia |
| Global Information Services GmbH | Schleswig-Holstein |
| Global IP Telecommunications Ltd | Hesse |
| global IT consulting GmbH | Baden-Württemberg |
| global IT Systems GmbH | |
| Global Sourcing AG | Bavaria |
| Global Sports Solutions | Bavaria |
| Global Tech I Offshore Wind GmbH | |
| Global Village GmbH | North Rhine-Westphalia |
| GlobalDataProtect | Bavaria |
| GlobalDots | |
| globalerp.de GmbH | Hamburg |
| Globalnetmedia - Kolber & Guttmann GbR | Hamburg |
| GLOBE Development GmbH | North Rhine-Westphalia |
| Globits GmbH | |
| GloBranch | |
| Glowienka Automatisierung GmbH | Lower Saxony |
| GLS Software & Systeme | Lower Saxony |
| Glück Engineering GmbH | Baden-Württemberg |
| Glück IT | North Rhine-Westphalia |
| glueckkanja-gab AG | Hesse |
| Glycotope GmbH | |
| GMC-I Messtechnik GmbH | Bavaria |
| GMK Electronic Design GmbH | Bavaria |
| GML Gesellschaft für mobile Lösungen mbH | North Rhine-Westphalia |
| GMX | Baden-Württemberg |
| Gmyrek Elektronik GmbH | Saxony-Anhalt |
| GNA Biosolutions GmbH | |
| GNS-Software | Bavaria |
| GNT Systems Germany GmbH | Bavaria |
| GNUnet e.V. | |
| GnuPG | North Rhine-Westphalia |
| Go Digital Software GmbH | |
| Go Internet GmbH & Co. KG | Baden-Württemberg |
| Go New Media GmbH & Co. KG | North Rhine-Westphalia |
| GO Systemelektronik GmbH | |