Alle Firmen mit dem Anfangsbuchstaben I
- Ing. Ralf Moschitz
- Ing. Ram Thomas
- Ing. Ramharter Klaus
- Ing. Ramharter Martin
- Ing. Rammer Reinhard
- Ing. Rampitsch Marko Franz
- Ing. Ramprecht Florian
- Ing. Ramsauer Rudolf
- Ing. Ramsauer Thomas
- Ing. Ramsbacher Thomas
- Ing. Randl Karl Heinz
- Ing. Ranstl Christian
- Ing. Ras Robert
- Ing. Raschbach Werner Wolfgang
- Ing. Rasinger Harald Walter Simon
- Ing. Rastl Rudolf
- Ing. Rath Vishal
- Ing. Ratheiser Robert
- Ing. Rathmanner Walter e.U.
- Ing. RATKA Michael
- Ing. Ratschiller-Avolio Susanne
- Ing. Rattenberger Rudolf Michael
- Ing. Rauch Elisabeth Chaclien
- Ing. Rauch Peter
- Ing. Rauch Peter
- Ing. Rauchenschwandner Markus
- Ing. Rausch Bernhard
- Ing. Rausch Katrin
- Ing. Rauscher Michael Josef
- Ing. Rauter Gloria
- Ing. Rauter Hans
- Ing. Rebenek Hermann
- Ing. Rebenklauber Stefan
- Ing. Rechberger Michael
- Ing. Redl Alfred
- Ing. Redl Helmut
- Ing. Rehrl Josef
- Ing. Reichel Dieter
- Ing. Reichel Peter
- Ing. Reichenauer Michael
- Ing. Reichenauer Rainer
- Ing. Reicher Josef
- Ing. Reichtomann Robert
- Ing. Reider Florian
- Ing. Reihs Christian
- Ing. Reimer Horst
- Ing. Reinalter Markus
- Ing. Reinbacher Michael
- Ing. Reiner Barbara Michaela
- Ing. Reinhard Bauer und Ilse Bauer Gesellschaft bürgerlichen Rechts
- Ing. Reinhard Fohringer | INFINA Partner
- Ing. Reinhard Ruiner KG
- Ing. Reinhardt Robert
- Ing. Reinhold Dankl Gesellschaft m.b.H.
- Ing. Reinhold Niescher | Infina Partner
- Ing. Reinhold Richard Trimmel Zeltverleih
- Ing. Reinprecht Franz
- Ing. Reinprecht OG
- Ing. Reischl GmbH - Gartengestaltung seit 1967
- Ing. Reischütz Michael
- Ing. Reisenthaler Christian
- Ing. Reiter Andreas
- Ing. Reiter Carine Elisabeth
- Ing. Reiter Gerald
- Ing. Reiter Gottfried
- Ing. Reiter Harald
- Ing. Reiter Helmut
- Ing. Reiter Karl Heinz
- Ing. Reiter Liane
- Ing. Reiter Sonja
- Ing. Remenarova Maria
- Ing. Rene Johann Schweitzer MSc
- Ing. Rene MARKL G.m.b.H.
- Ing. Renjo Tomislav
- Ing. Renner Hubert e.U.
- Ing. René Schweiger
- Ing. Resch Christian Koloman
- Ing. Resch Stefan
- Ing. Resch-Pachler Stefanie
- Ing. Reschner Gerald Martin