| 1A Landhotel Schicklberg | 1A Landhotel Schicklberg GmbH & Co KG, restaurant in Kremsmünster. |  |
| A-Trust | Company in the security industry, located in Vienna 3. | |
| A.K.V. Hei Jo Shin Leoben | Sport association for the discipline: Karate, located in Leoben. | |
| AAE Naturstrom | AAE Naturstrom Vertrieb GmbH, an electricity company in Austria. | |
| AARES | Company in the security industry, located in Klagenfurt am Wörthersee. | |
| Abel Claudia | Abel Claudia - Institut f Yoga | |
| Abendrestaurant Holzerstu | Abendrestaurant Holzerstubn, restaurant in Ehrwald. | |
| AC Hörbranz | Sport association for the discipline: Wrestling, located in Hörbranz. | |
| AC Hötting | Sport association for the discipline: Wrestling, located in Innsbruck. | |
| AC Vorwärts Graz | Sport association for the discipline: Wrestling, located in Graz. | |
| AC Wals | Sport association for the discipline: Wrestling, located in Wals. | |
| ACA | Company in the security industry, located in Salzburg. | |
| Achter Sicherheitsanlagen | Company in the security industry, located in Traunfeld. | |
| ACS Brand | Sport association for the discipline: Archery, located in Brand. | |
| Active & Relax Center | Active & Relax Center, restaurant in Waidhofen / Thaya. | |
| ACV Innsbruck | Sport association for the discipline: Wrestling, located in Thaur. | |
| Adam Restaurant | Adam Restaurant, restaurant in Viennas 8th district. | |
| Adlerbräu | Adlerbräu, traditional inn in Ernstbrunn. | |
| ADT Sensormatic GesmbH | Company in the security industry, located in Bergheim. | |
| Aera | AERA - In situ and on stage since 1990. | |