Alle Firmen mit dem Anfangsbuchstaben D
- Dipl-Ing. Resch Peter Klaus Anton
- Dipl-Ing. Reschenhofer Adelheid Gisela
- Dipl-Ing. Rettensteiner Arno
- Dipl-Ing. Rettensteiner Günther
- Dipl-Ing. Reuss Heinrich
- Dipl-Ing. Riahi Abbas
- Dipl-Ing. Rieder Wolfgang Karl
- Dipl-Ing. Riediger Hannes
- Dipl-Ing. Riedl Christian
- Dipl-Ing. Riedl Franz
- Dipl-Ing. Riedmann Peter
- Dipl-Ing. Rieger Manuel Clemens
- Dipl-Ing. Riegler Karin Gertrude
- Dipl-Ing. Riegler Leopold Josef
- Dipl-Ing. Riemer Walter
- Dipl-Ing. Riesel Franz
- Dipl-Ing. Rietzler-Litzenberger Markus
- Dipl-Ing. Rieß Hubert
- Dipl-Ing. Rigler Michael
- Dipl-Ing. Rigler-Kräftner Ulrike
- Dipl-Ing. Ringsmuth Ernst
- Dipl-Ing. Ristic Milica
- Dipl-Ing. Ritzinger Georg Michael
- Dipl-Ing. Rivas Rojas Guillermo Rafael
- Dipl-Ing. Robert Wagner
- Dipl-Ing. Robnig Markus Anton
- Dipl-Ing. Rogenhofer Gebhard Karl Adalbert
- Dipl-Ing. Rohracher Lukas
- Dipl-Ing. Rohrauer Manuel
- Dipl-Ing. Rohrhofer Karl
- Dipl-Ing. Rohringer Ludwig
- Dipl-Ing. Rohrmoser Siegfried
- Dipl-Ing. Roland Krois
- Dipl-Ing. Ronald Humitsch
- Dipl-Ing. Rosenauer David
- Dipl-Ing. Rosenberg Philipp Günter
- Dipl-Ing. Roseneder Sabine
- Dipl-Ing. Rosenfeld Alain
- Dipl-Ing. Rosensteiner Bernhard
- Dipl-Ing. Roth Martin
- Dipl-Ing. Rothenthal Adalbert
- Dipl-Ing. Rothwangl Rafaela
- Dipl-Ing. Rottensteiner Heinz
- Dipl-Ing. Rottler Martin
- Dipl-Ing. Rudrich Daniel Christian
- Dipl-Ing. Ruez Sonja
- Dipl-Ing. Rugovaj Ibish
- Dipl-Ing. Ruppert Christian Albert
- Dipl-Ing. Rusch Helmut Elmar Ludwig
- Dipl-Ing. Russ Rainer
- Dipl-Ing. Rutter Herbert
- Dipl-Ing. Rácz Alida Szilvia
- Dipl-Ing. Röhrer Erich
- Dipl-Ing. Sabau Warnung Petra
- Dipl-Ing. Sacher Claudia Katharina
- Dipl-Ing. Safaei Asadabadi Ramin Safaei
- Dipl-Ing. Sahli Amina
- Dipl-Ing. Sainitzer Reinhard
- Dipl-Ing. Saljic Ismir
- Dipl-Ing. Sam Franz
- Dipl-Ing. Sammer Hermann
- Dipl-Ing. Sams Josef
- Dipl-Ing. Sar Marianne
- Dipl-Ing. Sauter Heinz
- Dipl-Ing. Schabauer Josef
- Dipl-Ing. Schachinger Julia
- Dipl-Ing. Schaffer Wolfgang
- Dipl-Ing. Schagerl Kerstin
- Dipl-Ing. Schalk Michael
- Dipl-Ing. Schaller Michael
- Dipl-Ing. Schandl Andreas Heinrich
- Dipl-Ing. Schanil Walter
- Dipl-Ing. Schauer Hannes
- Dipl-Ing. Schauperl Katharina
- Dipl-Ing. Schechner Wolfgang
- Dipl-Ing. Scheibenecker Ingrid
- Dipl-Ing. Scheiber Barbara
- Dipl-Ing. Scheitnagl Thomas
- Dipl-Ing. Schell Alexander
- Dipl-Ing. Schemitsch Walter