Alle Firmen mit dem Anfangsbuchstaben D
- Dipl-Ing. Heiss Dorothea
- Dipl-Ing. Heistinger Andrea
- Dipl-Ing. Heller Werner
- Dipl-Ing. Helmreich Helmut
- Dipl-Ing. Helperstorfer Josef
- Dipl-Ing. Henöckl Christoph
- Dipl-Ing. Herbrich Rainer
- Dipl-Ing. Herbst Daniel
- Dipl-Ing. Herceg-Nachtlberger Judith Hildegard
- Dipl-Ing. Hergovich Astrid
- Dipl-Ing. Hermann Hainzl
- Dipl-Ing. Hermann Wallner
- Dipl-Ing. Hermanseder Roland
- Dipl-Ing. Herring-Frankensdorf Elisabeth
- Dipl-Ing. Hersche Bruno
- Dipl-Ing. Herzog Ewelina Anna
- Dipl-Ing. Heuthaler Wolfgang
- Dipl-Ing. Hilber Elke
- Dipl-Ing. Hille Marco-Oliver
- Dipl-Ing. Hillisch Wolfgang
- Dipl-Ing. Himmelbauer Hermann
- Dipl-Ing. Hink Franz
- Dipl-Ing. Hinterberger Wilhelm
- Dipl-Ing. Hinteregger Gernot
- Dipl-Ing. Hinteregger Nicole
- Dipl-Ing. Hinteregger Udo
- Dipl-Ing. Hintermeier Christoph
- Dipl-Ing. Hintermeier Günther
- Dipl-Ing. Hirm Gerhard
- Dipl-Ing. Hirm Iris
- Dipl-Ing. Hirner Heimo
- Dipl-Ing. Hirnschall David
- Dipl-Ing. Hirsch Christian
- Dipl-Ing. Hirsch Michael
- Dipl-Ing. Hirschler Manfred
- Dipl-Ing. Hirschmann Julia
- Dipl-Ing. Hirtner Klaus
- Dipl-Ing. Hloch Johannes
- Dipl-Ing. Hnizdil Peter
- Dipl-Ing. Hochkofler Michael Andreas
- Dipl-Ing. Hochpöchler Adelheid
- Dipl-Ing. Hochrainer Andreas
- Dipl-Ing. Hochreiner Georg
- Dipl-Ing. Hochstrasser Gerhard
- Dipl-Ing. Hochwartner Bernd
- Dipl-Ing. Hofbauer Elisabeth
- Dipl-Ing. Hofer Daniel
- Dipl-Ing. Hofer Jakob
- Dipl-Ing. Hofer Julia
- Dipl-Ing. Hofer Robert
- Dipl-Ing. Hoffelner Walter
- Dipl-Ing. Hoheiser Maximilian
- Dipl-Ing. Hohenfellner Hans
- Dipl-Ing. Hohenwarter Ferdinand
- Dipl-Ing. Hohl Viktoria
- Dipl-Ing. Hoke Edmund
- 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. Horky Roman
- Dipl-Ing. Horneck Karin
- Dipl-Ing. Horner Lieselotte
- Dipl-Ing. Hornoiu Andrei
- Dipl-Ing. Hornyik Andreas
- Dipl-Ing. Hortense Kotzinger
- Dipl-Ing. Horvath Kurt Klaus
- Dipl-Ing. Hranov Rumen
- Dipl-Ing. Hubeny Anton
- Dipl-Ing. Huber Gernot
- Dipl-Ing. Huber Johannes
- Dipl-Ing. Hubert Wild
- Dipl-Ing. Hubmann Helmut
- Dipl-Ing. Hughes Anja
- Dipl-Ing. Hulin Lukas
- Dipl-Ing. Hummelbrunner Michaela
- Dipl-Ing. Husinsky Otto