Alle Firmen mit dem Anfangsbuchstaben I
- Ing. Melisa Gözükara e.U.
- Ing. Mender Peter Hans
- Ing. MEng Kronthaler Andreas
- Ing. Menghin Marc
- Ing. Mentil Hermann
- Ing. Merschl KG
- Ing. Mertal Othmar
- Ing. Merten Peter
- Ing. Merz Stefan
- Ing. Merzeder Klaus Dieter
- Ing. Meschnig Robert
- Ing. Metin Yahya e.U.
- Ing. Metze Wolfgang
- Ing. Metzler Claudius
- Ing. Meyer Johannes
- Ing. Meyer Siegfried
- Ing. Meyer Vanessa
- Ing. Michael A. Müller Stadtbaumeister Ges.m.b.H.
- Ing. Michael Muhr e.U.
- Ing. Michael Peter Proksch
- Ing. Michael Toff
- Ing. Michael Truchlar
- Ing. Michael Tscherner - MT Sicherheitstechnik
- Ing. Michael Vötsch, Bauunternehmen e.U.
- Ing. Michael Zachl Elektronik & Energietechnik
- Ing. Michalikova Adela
- Ing. Mick Michael
- Ing. Miggitsch Georg
- Ing. Mikic Mario
- Ing. Miklautz Werner
- Ing. Miksche Roland
- Ing. Milijas Branko
- Ing. Milkovits Dietmar Paul Alexander
- Ing. Miller Michael
- Ing. Milojkovic Sasa
- Ing. Mirnigg Marc
- Ing. Miroslava Paukowitsch
- Ing. Miskovski Vinko
- Ing. Mistelbauer Christian
- Ing. Mitrakovic Benjamin
- Ing. Mitsch Christian
- Ing. Mitschanek Johannes Andreas
- Ing. Mittag Alfred
- Ing. Mitterbacher Arno
- Ing. Mitterbauer Harald
- Ing. Mitterbaur Franz
- Ing. Mittermayr Günter
- Ing. Mittermayr Siegfried
- Ing. Mittermüller Carl
- Ing. Mittlböck Andreas Markus
- Ing. Mladek Hans-Peter
- Ing. Mlinar Krste
- Ing. MMag. Dr. Gerhard Benda
- Ing. MMag. Gütlbauer Michael A.
- Ing. MMag. Winkler Michaela
- Ing. MMSc Karbon Katrin
- Ing. Mocker Horst Hermann Josef
- Ing. Moder Wilhelm
- Ing. Modritsch Markus
- Ing. Mohorko Wolfgang
- Ing. Moldaschl Angelika
- Ing. Moll Sophia Christa
- Ing. Moosbrugger Peter
- Ing. Moosbrugger Rene
- Ing. Morawetz Michael
- Ing. Morgenbesser Jürgen
- Ing. Morgenfurt Ralph
- Ing. Mosel Sepp
- Ing. Moser Angelika Karin
- Ing. Moser Bernhard
- Ing. Moser Bernhard
- Ing. Moser Björn Christoph
- Ing. Moser Florian
- Ing. Moser Josef
- Ing. Moser Patrick
- Ing. Moser Robert
- Ing. Moser Simone
- Ing. Moßhammer Josef
- Ing. MSc Adelthaler Erich Daniel
- Ing. MSc Akdag Idris