This directory aims at historical review only and does not claim to provide actual information.
| Company Name | Address | Postcode | Place | Awarded on | Type of award |
| Walter Bürgermeister GmbH | Gablonzerweg 6 | 4030 | Linz | 28.12.1987 | revocable |
| Wilhelm Schwarzmüller GmbH | Hanzing 11 | 4785 | Freinberg | 19.09.2006 | revocable |
| Weber-Hydraulik GmbH | Industriegebiet 3+4 | 4460 | Losenstein | 30.10.2014 | revocable |
| Wiesner - Hager Möbel KG | Linzer Straße 22 | 4950 | Altheim | 08.07.1981 | revocable |
| Wegscheider Farben Gesellschaft m.b.H. & Co. KG | Löwenzahnweg 9-11 | 4030 | Linz | 31.03.1981 | revocable |
| Weigl-Aufzüge Gesellschaft m.b.H. & Co. KG. | Webereistr. 14 | 4730 | Waizenkirchen | 24.05.2011 | revocable |
| Company Name | Address | Postcode | Place | Awarded on | Type of award |
