Alle Firmen mit dem Anfangsbuchstaben I
- Ing. Blasl Klaus-Dieter
- Ing. Blaßnig Alexandra
- Ing. Bleckenwegner Martin
- Ing. Bleho Milos
- Ing. Bliemel Manuel
- Ing. Blineder Peter
- Ing. Bloch Gerhard
- Ing. Blümel Franz
- Ing. Blüml GmbH
- Ing. Bobula Vladimir
- Ing. Bodner Hans
- Ing. Bodner Wohnbau GesmbH
- Ing. Boff Markus Jürgen
- Ing. Bohdalek Karl Adolf Otto
- Ing. Bohrn Franz
- Ing. Bondor Andreas Christian
- Ing. Bonigl Franz
- Ing. Botinant Ioan-Daniel
- Ing. BRADU OEG
- Ing. Bramböck Anton
- Ing. Bramböck Michael Herbert
- Ing. Brand Julian Sebastian
- Ing. Brandauer David
- Ing. Brandl Karl Ludwig
- Ing. Brandner Kurt
- Ing. Brandstetter Robert
- Ing. Brandstetter Thomas
- Ing. Brandstätter Andreas
- Ing. Brandstätter Fred-Helmuth
- Ing. Brandstätter Fred-Helmuth
- Ing. Brandstätter Karl
- Ing. Brandtner Thomas
- Ing. Bratko Miroslav
- Ing. Braun Herwig
- Ing. Brauneis Manuel
- Ing. Brauner Peter
- Ing. Braunsdorfer Johann
- Ing. Braunsteiner Michael
- Ing. Brawenec Peter
- Ing. Breitegger Georg
- Ing. Breitegger Georg
- Ing. Breitfuß Erwin
- Ing. Breitfuß Norbert Hannes
- Ing. Breithut Oliver
- Ing. Breitschuh Johannes Peter
- Ing. Brenner Ronald
- Ing. Bretschneider Karl
- Ing. Breuss Fritz
- Ing. Breyer Wolfgang
- Ing. Brieger Walter
- Ing. Briegler Adolf Georg
- Ing. Bruckmüller Thomas Erik
- Ing. Bruckner Robert
- Ing. Brugger Robert Michael
- Ing. Brugger Thomas Robert
- Ing. Bruneder Georg
- Ing. Brunner Daniela
- Ing. Brunner Patrick
- Ing. Brunner Walter
- Ing. Brunnhuber Egon
- Ing. Brunnhuber Erwin
- Ing. Bruno Gasser - Schlosserei & Metallbau
- Ing. Bruno Urschitz GmbH
- Ing. Brunthaler Manfred
- Ing. BSc Akca Mehmet
- Ing. BSc Allmer Lukas
- Ing. BSc Börner Christoph
- Ing. BSc Eisenmann Gerald
- Ing. BSc Etzl Klaus
- Ing. BSc Fink Roland Karl
- Ing. BSc Flucher Stefan
- Ing. BSc Gapp Stefan
- Ing. BSc Geissler Harald
- Ing. BSc Gnadlinger Fabian Michael
- Ing. BSc Graber Michael
- Ing. BSc Gubic Christopher
- Ing. BSc Huber Friedrich
- Ing. BSc Innerhofer Andreas Heinrich
- Ing. BSc Kranz Fabian
- Ing. BSc Lang Karel