Alle Firmen mit dem Anfangsbuchstaben I
- Ing. Köfer Günther
- Ing. Köfler Christian
- Ing. Kögelberger Wolfgang
- Ing. Köhbach Michael
- Ing. Köhler Andreas Reinhold
- Ing. Köhler Christian
- Ing. Köhler Helmut
- Ing. Köhlmeier Armin
- Ing. Kölly Bernhard
- Ing. König Franz
- Ing. König Karl Johann
- Ing. König Stefan Nikolaus
- Ing. Köpfelsberger Stefan
- Ing. Köppl Andreas
- Ing. Köteles Manfred
- Ing. Köttler Friedrich A.
- Ing. Kügerl Christian
- Ing. Kühne Roger Theodor
- Ing. Kühnel Alexander
- Ing. Lacher Simon
- Ing. Lacina Elektrotechnik GmbH
- Ing. Lackinger Marcel Alexander
- Ing. Lackinger Mehrzad
- Ing. Lackner Andreas
- Ing. Lackner David
- Ing. Lackner Lucas Josef
- Ing. Lackner Peter
- Ing. Lackner Stefan
- Ing. Ladentrog Marcus
- ING. LADISLAUS PETZ Immobilien-Bewertung GmbH
- Ing. Ladner Gerhard
- Ing. Ladstätter Herwig Christoph
- Ing. Lafer Benjamin Wilhelm
- Ing. Lager Wilfried
- Ing. Lagger Viola Magenta
- Ing. Laggner Gerald
- Ing. Laggner Peter
- Ing. Laimer Siegfried
- Ing. Lamb Herwig
- Ing. Landler Helmut
- Ing. Landner Markus
- Ing. Laneve Arno Laurin
- Ing. Lang ,MSc Uwe
- Ing. Lang Renate
- Ing. Lang Roman
- Ing. Lang Wolfgang
- Ing. Langegger Martin
- Ing. Langerreiter Michael
- Ing. Langmann Michael
- Ing. Langmann Robert
- Ing. Langsteiner Andreas
- Ing. Lanz Richard Herbert
- Ing. Lanzerstorfer Manuel
- Ing. Larcher Ralf
- Ing. Lasser Thomas Richard
- Ing. Lassy Markus Walter
- Ing. Lauko Michael Theo
- Ing. Lauritsch Erich R
- Ing. Lazar Friedrich Hubert
- Ing. Leb Stefan
- Ing. Leber Kurt
- Ing. Leber Martin
- Ing. Leberbauer David Martin
- Ing. Leberer Martin
- Ing. Lebesmühlbacher Stefan
- Ing. Lechleitner Herbert
- Ing. Lechner Christian Walter
- Ing. Lechner Jürgen
- Ing. Lechnitz Alfred
- Ing. Lederhilger Günther Ernst
- Ing. Lef Helmut
- Ing. Lehner Harald
- Ing. Lehofer Erich Franz
- Ing. Leibetseder Simon
- Ing. Leichter Johannes Christoph
- Ing. Leinweber Walter
- Ing. Leisch Herbert
- Ing. Leitgeb Denise
- Ing. Leithner Johannes
- Ing. Leitner Alexander