Alle Firmen mit dem Anfangsbuchstaben D
- Dipl-Ing. Hohenfellner Hans
- Dipl-Ing. Hohenwarter Ferdinand
- Dipl-Ing. Hoke Edmund
- Dipl-Ing. Holland Florian
- Dipl-Ing. Holland Monika
- Dipl-Ing. Hollauf Günther
- Dipl-Ing. Hollauf Nicole
- Dipl-Ing. Holler Christian
- Dipl-Ing. Holy Stefanie Martina Friederike
- Dipl-Ing. Holzeis Richard
- Dipl-Ing. Holzer Michael
- Dipl-Ing. Honeder Clemens
- Dipl-Ing. Horky Roman
- Dipl-Ing. Horner Lieselotte
- Dipl-Ing. Hornoiu Andrei
- Dipl-Ing. Hortense Kotzinger
- Dipl-Ing. Hranov Rumen
- Dipl-Ing. Hubeny Anton
- Dipl-Ing. Huber Gernot
- Dipl-Ing. Huber Hubert
- Dipl-Ing. Huber Johannes
- Dipl-Ing. Hubert Wild
- Dipl-Ing. Hubmann Helmut
- Dipl-Ing. Hulin Lukas
- Dipl-Ing. Hummelbrunner Michaela
- Dipl-Ing. Hurka Georg Gottfried
- Dipl-Ing. Husinsky Otto
- Dipl-Ing. Huska Günter Viktor
- Dipl-Ing. Hutflesz Philipp
- Dipl-Ing. Hutter Stefan Johannes
- Dipl-Ing. Hutterer-Tik Thomas
- Dipl-Ing. Hutze Robert
- Dipl-Ing. Hyttinen Markku T.
- Dipl-Ing. Hämmerle Marc
- Dipl-Ing. Häusgen Günter
- Dipl-Ing. Höchsmann Matthias
- Dipl-Ing. Hödlmoser Manfred
- Dipl-Ing. Höfl Raphaela
- Dipl-Ing. Höflehner Rene
- Dipl-Ing. Höller Manfred
- Dipl-Ing. Höllersberger Tamara
- Dipl-Ing. Hübl Moritz Julius
- Dipl-Ing. Hübner Ede
- Dipl-Ing. Hüller Wolfgang
- Dipl-Ing. Hülsmann Christof Johannes
- Dipl-Ing. Hüttinger Georg
- Dipl-Ing. Hüttler Walter
- Dipl-Ing. Ikrath Thomas
- Dipl-Ing. Innthaler Gernot
- Dipl-Ing. Ionita Mihail-Iulian
- Dipl-Ing. Irinkov Plamen
- Dipl-Ing. Irrgeher Hans
- Dipl-Ing. Ivanov Hristo
- Dipl-Ing. Iwach Ewald
- Dipl-Ing. Jagersberger Andreas Josef
- Dipl-Ing. Jakovljevic Goran
- Dipl-Ing. Jankovic Aleksandar
- Dipl-Ing. Japundza Dejan
- Dipl-Ing. Jarosch Hannes
- Dipl-Ing. Jauk Heinz
- Dipl-Ing. Jautz Alexander Josef
- Dipl-Ing. Jerolitsch David Philipp Christian
- Dipl-Ing. Jesche Franz Maria Modestus Peter
- Dipl-Ing. Joelsohn Dominik Otto
- Dipl-Ing. Johann Horvath
- Dipl-Ing. Johann Rosenthaler
- Dipl-Ing. Josef Jürgen
- Dipl-Ing. Jouned Mhd Adnan
- Dipl-Ing. Jozsef B Kiss
- Dipl-Ing. Jungwirth Bert
- Dipl-Ing. Jurhar Dalibor
- Dipl-Ing. Jäger Horst
- Dipl-Ing. Jäger Wolfgang
- Dipl-Ing. Jörg Jennifer
- Dipl-Ing. Kainrad Thomas Karl
- Dipl-Ing. Kainz Christian
- Dipl-Ing. Kaiser Marius Gabriel Franz
- Dipl-Ing. Kajic Sinisa
- Dipl-Ing. Kaksis Edgar
- Dipl-Ing. Kaliba Norbert