| GPI Consulting GmbH | |
| GPP Communication GmbH & Co. KG | Bavaria |
| GQ Bio Therapeutics GmbH | |
| GQSystema AG | |
| GR Capital | |
| Graap IT-Service GmbH | |
| Grace | |
| Graebert GmbH | Berlin |
| Graef Computer GmbH | North Rhine-Westphalia |
| Graf Consulting | |
| Graf+Hausmann GmbH | Baden-Württemberg |
| Gräff Robotics GmbH | North Rhine-Westphalia |
| Gräffker Elektronik GmbH | North Rhine-Westphalia |
| Grafikbüro Peter Kaplan | Rhineland-Palatinate |
| GRAFIS Software Dr. K. Friedrich GbR | North Rhine-Westphalia |
| Grafix-House | North Rhine-Westphalia |
| Grafix21 | Thuringia |
| GRAHL software design | Bavaria |
| GRAINsoft GmbH | |
| Grand Digital - Daniel Erke GmbH & Co. KG | |
| grandcentrix GmbH | North Rhine-Westphalia |
| Granit GmbH | Baden-Württemberg |
| Granola Studios GmbH | |
| Granpasso Digital Strategy GmbH | |
| Granpasso Solutions GmbH | |
| Graphek GmbH | |
| GraphHopper GmbH | |
| Graphic-Tools | Berlin |
| graphics4web | |
| Graphische Informationstechnik Beratungsgesellschaft mbH | North Rhine-Westphalia |
| Graphisoft Center Dresden | Saxony |
| Graphworkx Media | |
| Grass GmbH | Rhineland-Palatinate |
| Grass-Merkur GmbH & Co. KG | Lower Saxony |
| Grassroots Arts and Research UG | |
| Graswald GmbH | |
| Grau Data Storage AG | Baden-Württemberg |
| Grau GmbH | North Rhine-Westphalia |
| GRAVIS Computervertriebsgesellschaft mbH | Berlin |
| gravus24 | |
| Graw Radiosondes GmbH & Co. KG | Bavaria |
| Greatnet.de GmbH | Berlin |
| Green Banana Group GmbH | |
| Green City Solutions GmbH | |
| Green Elephant Biotech GmbH | |
| Green Generation Management GmbH | |
| GREEN IT Das Systemhaus GmbH | |
| Greenbone AG | |
| Greenlyte Carbon Technologies GmbH | |
| GreenPocket GmbH | |