Alle Firmen mit dem Anfangsbuchstaben I
- Ing. Wagner Nicole
- Ing. Wagner Sebastian
- Ing. Wagner Thomas Jochen
- Ing. Wagner Walter
- Ing. Wagner Wilhelm
- Ing. Wagner Willibald
- Ing. Wahl Christian
- Ing. Wahlmüller Stefan
- Ing. Wald Egon Ermin
- Ing. Walder Lukas Georg
- Ing. Walder Stefan Wolfgang
- Ing. Waldhart Gerold
- Ing. Waldherr Stefan
- Ing. Waldhuber Gerald
- Ing. Walker Bernhard
- Ing. Wallner Armin
- Ing. Wallner Beteiligungs GmbH
- Ing. Wallner Kurt Michael
- Ing. Wallner Thomas Anton
- Ing. Waltenberger Andreas
- Ing. Walter Ausweger - Technisches Büro für Maschinenbau
- Ing. Walter Hahn Bäckerei- und Konditoreitechnik GmbH
- Ing. Walter Heinz
- Ing. Walter Helmut
- Ing. Walter Herbert
- Ing. Walter Huber KG
- Ing. Walter Michael Siegfried
- Ing. Walter Otto
- Ing. Walter Steingreß-Registrier- kassencenter Gesellschaft m.b.H.
- Ing. Walter Streit Baugesellschaft m.b.H.
- Ing. Walter Wallauch | Effectiva Partner
- Ing. Walther Neuhardt technisches Büro e.U.
- Ing. Waltl Josef
- Ing. Waltle Markus
- Ing. Walzl Günther Adolf
- Ing. Wambacher Dominik Josef
- Ing. Wandelnig Max
- Ing. Wanggo-Mayer Ulrike Maria
- Ing. Wappel Thomas
- Ing. Wartelsteiner Johann
- Ing. Wartinger Jürgen
- Ing. Wasserbauer Moritz Jonathan
- Ing. Watzke Rene
- Ing. Waß Andreas
- Ing. Weber Andreas
- Ing. Weber Andreas
- Ing. Weber Helmut Alexander
- Ing. Weber Mirko
- Ing. Weber Norbert Silvio
- Ing. Weber Roland
- Ing. Weber Stephan
- Ing. Wechner Thomas Johannes Franz
- Ing. Wecht Thomas
- Ing. Wegerer Florian
- Ing. Wegmann Florian
- Ing. Wegscheider Brandschutzberatungs KG
- Ing. Wegscheider Georg
- Ing. Wehinger Karl-Heinz
- Ing. Weidinger Heribert
- Ing. Weidlinger Ferdinand
- Ing. Weidmann Hubert Josef
- Ing. Weigand-Berger Angelika - Rauchfangkehrermeister
- Ing. Weihs Harald
- Ing. Weihs Heinrich
- Ing. Weilbuchner Wolfgang
- Ing. Weilguny Günter
- Ing. Weingartner Michael
- Ing. Weingerl Karl
- Ing. Weingraber Rainer
- Ing. Weingril Wolfgang Ulrich Alois
- Ing. Weinhappl Johannes
- Ing. Weinhofer Christian
- Ing. Weinhofer Patrick
- Ing. Weinhold Martin
- Ing. Weinhäusel Gerhard
- Ing. Weinmeier Wilhelm
- Ing. Weinzettl Mario Robert
- Ing. Weinzierl Gregor Nicolaus
- Ing. Weiss Christian
- Ing. Weiss Martin Günther