Alle Firmen mit dem Anfangsbuchstaben I
- Ing. Maschke Michael Horst
- Ing. Masoomi Najib
- Ing. Mateyka Christian Rudolf
- Ing. Matheisz Felix
- Ing. Mathä Hermann
- Ing. Matthias Scharmüller e.U.
- Ing. Mattula Ernst Alois
- Ing. Maurer Josef
- Ing. Maurer Philip Johannes
- Ing. Maurer Robin Josef
- Ing. Mauser Johannes
- Ing. Max Hengl Gesellschaft m.b.H.
- Ing. Max Irene
- Ing. Mayer Andreas
- Ing. Mayer Ernest
- Ing. Mayer Gerald
- Ing. Mayer Isabella Veronika
- Ing. Mayer Johannes
- Ing. Mayer Klaus-Jürgen
- Ing. Mayer Manfred
- Ing. Mayer Martin
- Ing. Mayer Stefan
- Ing. Mayer Werner
- Ing. Mayerhofer Florian
- Ing. Mayerhofer Walter
- Ing. Mayerl Stefan
- Ing. Mayr Gregor
- Ing. Mayr Helmut Lorenz
- Ing. Mayr Michael
- Ing. Mayr Michael
- Ing. Mayr Peter Michael
- Ing. Mayrhofer Georg
- Ing. Mayrhofer Josef
- Ing. MBA Annewanter Reinhold Günther
- Ing. MBA Bauer Andreas
- Ing. MBA Bauer Gerhard
- Ing. MBA Burmetler Joachim
- Ing. MBA CMC Angelmayr Werner
- Ing. MBA Graf Markus Josef
- Ing. MBA Hutter Stefan Matthias
- Ing. MBA Koitz Karl Martin
- Ing. MBA Lampl Josef
- Ing. MBA Lindinger Christian
- Ing. MBA Paulnsteiner Reinhard
- Ing. MBA Polanyi Christian Johannes
- Ing. MBA Schüller Daniel Erich
- Ing. MBA Thürnbeck-Kiss Markus
- Ing. MBA Winter Harald
- Ing. Medgyesy Andreas
- Ing. Meindl Edwin
- Ing. Meindl-Bernauer Johann
- Ing. Meisinger Timm
- Ing. Meisl Michael
- Ing. Meisl Thomas
- Ing. Meixner Horst Lorenz
- Ing. Meixner Wolfgang
- Ing. Mejatsch Friedrich
- 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. Meschnig Robert
- Ing. Metin Yahya e.U.
- Ing. Metze Wolfgang
- Ing. Metzler Claudius
- Ing. Meyer Siegfried
- Ing. Meyer Vanessa
- Ing. Michael A. Müller Stadtbaumeister Ges.m.b.H.
- Ing. Michael Nasko
- Ing. Michael Peter Proksch
- Ing. Michael Toff
- Ing. Michael Truchlar
- Ing. Michael Vötsch, Bauunternehmen e.U.
- Ing. Michael Zachl Elektronik & Energietechnik
- Ing. Mick Michael