Alle Firmen mit dem Anfangsbuchstaben I
- Ing. MA Auner Kevin
- Ing. MA Ehrenstrasser Konrad Franz
- Ing. MA Frühwirth Viktoria Barbara Josefine
- Ing. MA Geyer Sebastian
- Ing. MA Klein Markus Stefan
- Ing. MA Lameraner Reinhard Andreas
- Ing. MA Linhart Rüdiger Christian
- Ing. MA Mayr Karina Maria
- Ing. MA MSc Reinprecht Markus Karl
- Ing. MA Schaller Andrea
- Ing. MA Sedlaczek David
- Ing. MA Teufl Michael
- Ing. Macak Daniel
- Ing. Machanec Dalibor
- Ing. Macherhammer Eva Maria
- Ing. Macho Günther
- Ing. Mack Berndt
- Ing. Mack Werner Kurt
- Ing. Mader Erich
- Ing. Mader Gerald
- Ing. Mader Herbert
- Ing. Mader Peter
- Ing. Madlener Pascal
- Ing. Madler Michael
- Ing. Mag. (FH) Blaßnig Christian
- Ing. Mag. (FH) Eder Isabella Veronika
- Ing. Mag. (FH) Gratzer Alexander Clemens
- Ing. Mag. (FH) Greiner David
- Ing. Mag. (FH) Guggenberger Hannes
- Ing. Mag. (FH) Jabri Nasr
- Ing. Mag. (FH) Kaltenbrunner Ingeborg
- Ing. Mag. (FH) Kandler Robert Matthias
- Ing. Mag. (FH) Löscher Reinhard Johann
- Ing. Mag. (FH) Pamperl Ing. Thomas Franz
- Ing. Mag. (FH) Penegger Erika Theresia
- Ing. Mag. (FH) Perg Stefan
- Ing. Mag. (FH) Pichler Anton Markus
- Ing. Mag. (FH) Speiser Markus
- Ing. Mag. (FH) Vertacnik Bernhard Klaus
- Ing. Mag. (FH) Wanderer Markus Georg Alexander
- Ing. Mag. Achleitner Josef
- Ing. Mag. Andreas Gartner
- Ing. Mag. arch. Maar Christian
- Ing. Mag. arch. Schlager Erich
- Ing. Mag. Bach Bernd
- Ing. Mag. Bacher Udo
- Ing. Mag. Bakk. Prem Tamara
- Ing. Mag. Barth Heinrich
- Ing. Mag. Baumgartner Andreas Michael
- Ing. Mag. Bernberger Monika
- Ing. Mag. Birjandi Hannes Komeyli
- Ing. Mag. Borutzky Ernst
- Ing. Mag. BSc Leihs Matthias
- Ing. Mag. Burianek Lukas Ivo
- Ing. Mag. Christoph Bolzer
- Ing. Mag. Daume Herbert
- Ing. Mag. Deltl Andrea
- Ing. Mag. Dobler Andreas
- Ing. Mag. Dorfstätter Markus Hannes
- Ing. Mag. Dr. Granig Peter
- Ing. Mag. Dr. Hubert Engstler
- Ing. Mag. Dr. Jurak Felix
- Ing. Mag. Dr. Patay Georg Nikolaus Xaver
- Ing. Mag. Dr. Paul Rübig, MEP
- Ing. Mag. Dr. Stadlbauer Alfons
- Ing. Mag. Dworschak Andreas
- Ing. Mag. Döltl Richard
- Ing. Mag. Dörr Christian
- Ing. Mag. Eberl Walter
- Ing. Mag. Ebner Walter
- Ing. Mag. Eckert Ferdinand
- Ing. Mag. Eisenhut Claus
- Ing. Mag. Eplinger-Denk Julia
- Ing. Mag. Ertl Roland
- Ing. Mag. Fellsner Doris Edeltraud Maria
- Ing. Mag. Fiel Gudrun
- Ing. Mag. Filler Gerhard
- Ing. Mag. Frank Thomas Wolf Dieter
- Ing. Mag. Frießer Robert
- Ing. Mag. Fürst-Pluta Marc Andreas