Alle Firmen mit dem Anfangsbuchstaben D
- Dipl-Ing. Dr. Wiesner Wolfgang
- Dipl-Ing. Dr. Wimmer Heinz
- Dipl-Ing. Dr. Windsperger Günther
- Dipl-Ing. Dr. Winter Gerhard
- Dipl-Ing. Dr. Wirnsberger Gernot
- Dipl-Ing. Dr. Wirthensohn Thomas
- Dipl-Ing. Dr. Wirthumer-Hoche Christa Anna Maria
- Dipl-Ing. Dr. Wolfsberger Tatjana Waltraud Maria
- Dipl-Ing. Dr. Wurzer Gabriel
- Dipl-Ing. Dr. Zahradnik Veslav
- Dipl-Ing. Dr. Zazgornik Jan Wolfgang
- Dipl-Ing. Dr. Zeller Rudolf
- Dipl-Ing. Dr. Zettl Martin
- Dipl-Ing. Dr. Zettler Alfred
- Dipl-Ing. Dr. Zisser Wolfhard Harald
- Dipl-Ing. Dr. Zocher Florian
- Dipl-Ing. Dr. Zotrin Robert Josef
- Dipl-Ing. Dr. Öhlknecht Christoph
- Dipl-Ing. Draschkowitz Christoph
- Dipl-Ing. Drechsel Gerhard
- Dipl-Ing. Dregelyvari Günther
- Dipl-Ing. Drexel Thomas
- Dipl-Ing. Drexler Norbert
- Dipl-Ing. Drivodelits Andreas Johann
- Dipl-Ing. Drobesch Erich
- Dipl-Ing. Dubowy Christiane Berta
- Dipl-Ing. Dudakovic Damir
- Dipl-Ing. Duft Dietmar Gerold
- Dipl-Ing. Dunst Peter
- Dipl-Ing. Durchschlag Bernhard Walter
- Dipl-Ing. Dämon Martin
- Dipl-Ing. Däuber Friedrich
- Dipl-Ing. Dünser Hubert
- Dipl-Ing. Ebenhöh Peter
- Dipl-Ing. Ebner Johann
- Dipl-Ing. Ebner Thomas
- Dipl-Ing. Ecker-Eckhofen Helmut
- Dipl-Ing. Eckhart Paul Michael
- Dipl-Ing. Eckl Thomas
- Dipl-Ing. Eder Helmut Werner
- Dipl-Ing. Eder Peter
- Dipl-Ing. Edtmair Joachim
- Dipl-Ing. Egger Winfried
- Dipl-Ing. Egger-Haas Alexandra Christine
- Dipl-Ing. Ehrbar Ulfried
- Dipl-Ing. Ehrlich Elisabeth
- Dipl-Ing. Eibensteiner Erich
- Dipl-Ing. Eibl Christoph
- Dipl-Ing. Einicher Walter
- Dipl-Ing. Eisenhut Christina Maria
- Dipl-Ing. Eitel Thomas
- Dipl-Ing. Eizinger Horst
- Dipl-Ing. Ekart Alexander
- Dipl-Ing. El Mesallamy Ahmed
- Dipl-Ing. El-Abd Sabry
- Dipl-Ing. Elisabeth Neudecker-Rib
- Dipl-Ing. Ellersdorfer Michael
- Dipl-Ing. Ellinger Reinhard
- Dipl-Ing. Embacher Michael
- Dipl-Ing. Endlicher Hannes Friedrich
- Dipl-Ing. Engelhart-Stumptner Reinhard
- Dipl-Ing. Entfellner Katrin
- Dipl-Ing. Entlicher Winfried
- Dipl-Ing. Enzi-Zechner Vera
- Dipl-Ing. Enzinger Gerald Walter
- Dipl-Ing. Erber David
- Dipl-Ing. Erhart-Schippek Werner
- Dipl-Ing. Erian Franz
- Dipl-Ing. Erian Paul Clemens
- Dipl-Ing. Ertim Soner
- Dipl-Ing. Ertl Johann
- Dipl-Ing. Eugl Ursula
- Dipl-Ing. Fahrngruber Wolfgang
- Dipl-Ing. Faihs Roland Alexander
- Dipl-Ing. Faleschini Robert
- Dipl-Ing. Fallast Mario
- Dipl-Ing. Fankhauser Tobias
- Dipl-Ing. Farag Shaaban
- Dipl-Ing. Farag Shaaban
- Dipl-Ing. Farcher Christian