| G.ST Antivirals GmbH | |
| G3 Electronic Technologie GmbH | Vorarlberg |
| Gaijin.at | Lower Austria |
| Galaktika-soft | |
| Gangl | Vienna |
| GANTNER Electronic GmbH | Vorarlberg |
| Gantner Instruments GmbH | Vorarlberg |
| ganyMED | Styria |
| Garden Gnome Software | Vienna |
| Gateway Ventures | |
| GBTEC Austria GmbH | |
| GCP Gamma Capital Partners Beratungs- & Beteiligungs GmbH | Vienna |
| Gearworx e.U. | Upper Austria |
| Gebro Pharma GmbH | |
| Genie-App | |
| Genspeed Biotech GmbH | |
| George Labs | |
| GeoVille Information Systems GmbH | |
| Get on Top GmbH | Salzburg |
| Getdesigned | Vienna |
| GEVA Elektronik-Handelsgesellschaft mbH | Lower Austria |
| GH-Webdesign | Lower Austria |
| Gimpusers.com | Vienna |
| Giscluster Salzburg | Salzburg |
| Gizmocraft, Design and Technology GmbH | Vienna |
| Glacier Carbon Reduction GmbH | |
| GLEAM Technologies GmbH | |
| Global Event Technologies GmbH & Co. KG | Salzburg |
| Global Incubator Network Austria | Vienna |
| globesystems Business Software GmbH | |
| Glyphs GmbH | |
| GMS Hutter GmbH & Co KG | Salzburg |
| GO.WEST Communications GmbH | Salzburg |
| Goesta Smekal IT-Consulting | Vienna |
| GoStudent GmbH | |
| goUrban | |
| GPGTools GmbH | |
| Graf Holding GmbH | Vorarlberg |
| GraphSense | |
| Graz Camera | Styria |
| Graz University of Technology - Institute for Computer Graphics and Vision | Styria |
| Graz University of Technology - Mathematics | Styria |
| Green Rocket GmbH | |
| Green4Cities GmbH | |
| GREENoneTEC Solarindustrie GmbH | |
| Greenstart | |
| Greentube | Vienna |
| Greiner Bio-One International GmbH | |
| Greiner Innoventures GmbH | |
| Groiss Informatics GmbH | Carinthia |