Alle Firmen mit dem Anfangsbuchstaben I
- Ing. Raschun Philipp Raimund
- Ing. Rasinger Harald Walter Simon
- Ing. Ratheiser Robert
- Ing. Rathmanner Walter e.U.
- Ing. Ratka Michael Christian
- Ing. Rattenberger Rudolf Michael
- Ing. Ratzberger Marlene
- Ing. Rauch Elisabeth Chaclien
- Ing. Rauch Peter
- Ing. Rauch Peter
- Ing. Rausch Katrin
- Ing. Rauter Johann
- Ing. Ray Mario
- Ing. Rebenek Hermann
- Ing. Rechberger Michael
- Ing. Rechberger Verena Christine
- Ing. Redl Helmut
- Ing. Rehak Thomas
- Ing. Rehrl Josef
- Ing. Reibnegger Alfred Michael
- Ing. Reichel Dieter
- Ing. Reichel Peter
- Ing. Reichenauer Michael
- Ing. Reichenauer Rainer
- Ing. Reicher Josef
- Ing. Reichhold Daniel Josef
- Ing. Reichtomann Robert
- Ing. Reider Florian
- Ing. Reihs Christian
- Ing. Reimer Horst
- Ing. Reinbacher Michael
- Ing. Reiner Barbara Michaela
- Ing. Reiner Tobias Kurt
- Ing. Reinhard Bauer und Ilse Bauer Gesellschaft bürgerlichen Rechts
- Ing. Reinhard Fohringer | INFINA Partner
- Ing. Reinhard Hanns Sicherheitstechnik e.U.
- Ing. Reinhard Leibetseder Bauelemente GmbH
- Ing. Reinhard Ruiner KG
- Ing. Reinhard Schreckeneder
- Ing. Reinhold Dankl Gesellschaft m.b.H.
- Ing. Reinhold Niescher | Infina Partner
- Ing. Reinisch Rene Peter
- Ing. Reinprecht Franz
- Ing. Reinprecht OG
- Ing. Reischl GmbH - Gartengestaltung seit 1967
- Ing. Reischütz Michael
- Ing. Reisenthaler Christian
- Ing. Reisinger Lorenz Franz
- Ing. Reisinger Lukas
- Ing. Reissner Christian
- Ing. Reiter Andreas
- Ing. Reiter Carine Elisabeth
- Ing. Reiter Christian
- Ing. Reiter Harald
- Ing. Reiter Helmut
- Ing. Reiter Liane
- Ing. Reiter Sonja
- Ing. Reiterer Leopold
- Ing. Reiterer Rene
- Ing. Reitmayr Thomas
- Ing. Rene MARKL G.m.b.H.
- Ing. Renner Hubert e.U.
- Ing. Resavac Ivan
- Ing. Resch Christian Koloman
- Ing. Resch Stefan
- Ing. Resch-Pachler Stefanie
- Ing. Resl Autohaus Ges.m.b.H & Co KG
- Ing. Resl Autohaus GmbH
- Ing. Resl Helmut
- Ing. Reumann Ronald
- Ing. Richard Blaha GesmbH
- Ing. Richard Deutner Softwareentwicklung & Beratung e.U.
- Ing. Richard Pölzl GmbH
- Ing. Richard Rambacher Dachdecker- und Zimmerei GmbH
- Ing. Richard Wachter BSc
- Ing. Ridjic Philipp
- Ing. Riedelmayer Ewald Adolf Leopold
- Ing. Riedelsperger Christian
- Ing. Rieder Günther
- Ing. Rieder InstallationsgesmbH