| ABS Biotechnologies GmbH | |
| ABSS Interactive | Vienna |
| AC & Friends GmbH | |
| Academia Computer | Vienna |
| ACAM Systemautomation GmbH | Styria |
| ACC Werbeagentur GmbH | |
| accent Inkubator GmbH | |
| Accession Capital Partners GmbH | |
| ACDCA - Austrian Center for Didactics of Computer Algebra | Vienna |
| ace Neue Informationstechnologien GmbH | Vienna |
| Achtzehn Grad | |
| ACMIT GmbH | |
| ACP Holding Österreich GmbH | Vienna |
| ActFax Communication-Software GmbH | Lower Austria |
| Actief-Jobmade GmbH | |
| activeIT Software & Consulting GmbH | Styria |
| ad:grafik | Vienna |
| Adcon Telemetry GmbH | Lower Austria |
| addIT Dienstleistungen GmbH & Co. KG | |
| adino.at Internetservice GmbH | Vorarlberg |
| Adler.Studio | |
| ADMIRAL Sportwetten GmbH | |
| ADONIS:Community Edition | Vienna |
| Adrom Media Marketing GmbH | Vorarlberg |
| Advanced Technical Software | Vienna |
| Advanced Training Competence KG | Upper Austria |
| Advantage Austria | |
| Adverity | |
| Aerospace & Advanced Composites GmbH | |
| AFFiRiS AG | |
| Agentur G+ | Upper Austria |
| AGEO | Vienna |
| Agravity GmbH | |
| Agro Innovation Lab GmbH | Vienna |
| AhaSend | |
| AHK Softwaregutachten.at e.U. | |
| Aignesberger Software GmbH | |
| Airborne Technologies GmbH | |
| AirportCity Space | |
| AIRSKIN | |
| Airskin GmbH | |
| AIT Austrian Institute of Technology GmbH | Vienna |
| Aitiologic GmbH | |
| Akademie der bildenden Künste Wien | Vienna |
| Alcotec Computer GmbH | Lower Austria |
| Alex Edwards | |
| Alexandra Della Toffola | Vienna |
| Alfred Danda | |
| All About Apps GmbH | |
| ALL4web Internetsolutions, Strohmaier Krajnz OG | Styria |