Alle Firmen mit dem Anfangsbuchstaben I
- Ing. Turner Robert
- Ing. Uedl David
- Ing. Uhlich Thomas
- Ing. Uitz Günther Baugesellschaft m.b.H.
- Ing. Uitz Mario Karl
- Ing. Ukobitz Stefan
- Ing. Ulm Karl-Heinz
- Ing. Ulrich Gilbert Norbert
- Ing. Umbauer Markus
- Ing. Undesser Manuel
- Ing. Unger Markus
- Ing. Unterdechler Ingo
- Ing. Unterrainer Mario
- Ing. Unterrainer Peter
- Ing. Unterweger Gerald
- Ing. Unterweger Robert
- Ing. Urban Florian Sebastian Benjamin
- Ing. Urbanich Herbert
- Ing. Urschler Bernd
- Ing. Uygun Burak
- Ing. Vaclavik Premysl
- Ing. Vadura Viktor
- Ing. Vakhiev Salman
- Ing. Valentan Wolfgang
- Ing. Van Dam Martin
- Ing. Van Der Meulen Alfred
- Ing. Varga Peter
- Ing. Vavra Carmen
- Ing. Vehovec Volker
- Ing. Vejprava Thomas
- Ing. Velic Mladen
- Ing. Vieregg Armin Helmut
- Ing. Vietze Stefan Leopold
- Ing. Viktor Gusel GesmbH
- Ing. Vins Dejan Conrad
- Ing. Virag Gabor
- Ing. Vit Markus Alexander
- Ing. Vockenhuber Robert Ernst
- Ing. Vogl Stefan
- Ing. Voglmayr Mario
- Ing. Vogt Michael
- Ing. Vollenhofer Rene
- Ing. Voltolini Michaela
- Ing. Vonasek Stefan
- Ing. Vonwald-Kahrer Christoph
- Ing. Voppichler Johannes Lukas
- Ing. Vorstandlechner Werner
- Ing. Vosatka Thomas
- Ing. Vostinakova Klara
- Ing. Vrzal Christoph Peter
- Ing. Vukovic Aldin
- Ing. Vyskocil Peter Christian
- Ing. VÖLKER Martin
- Ing. Vögele Alois
- Ing. Vögerle Ernest Bernd
- Ing. Völker Michael
- Ing. Vötter Benjamin Hartmann
- Ing. W Baumgartner GesmbH & Co KG
- Ing. W. Baumgartner Gesellschaft m.b.H.
- Ing. W. Hutfless Klimatechnik GmbH
- Ing. W. Reicher Winterdienste - Grünanlagenpflege GmbH
- Ing. Waba Johannes
- Ing. Wabnegg Herbert
- Ing. Wabnegg Robert Kurt
- Ing. Wabnig Gerhard
- Ing. Wachschütz Christian
- Ing. Wachter Peter
- Ing. Wagenleitner Franz
- Ing. Wagesreither Martin
- Ing. Wagner Arian Aris
- Ing. Wagner Beate Stefanie
- Ing. Wagner Fritz
- Ing. Wagner Martin
- Ing. Wagner Matthias
- Ing. Wagner Nicole
- Ing. Wagner Sebastian
- Ing. Wagner Thomas Jochen
- Ing. Wagner Walter
- Ing. Wagner Wilhelm
- Ing. Wagner Willibald