| RIAT Institute | |
| Ribbon Bio GmbH | |
| Ribbon Biolabs GmbH | |
| Ricoh Austria GmbH | Vienna |
| Riddle & Code GmbH | |
| RIS GmbH | Upper Austria |
| RISC Software GmbH | Upper Austria |
| Riskine GmbH | |
| Rittler & Co GmbH | |
| rmDATA GmbH | Burgenland |
| RNAAnalytics Advanced Research GmbH | |
| Robert Wetzlmayr | Upper Austria |
| Roland Gareis Consulting GmbH | Vienna |
| Ronetix.at | Vienna |
| Roromedia GmbH | |
| Round2 Capital | |
| Royal Apps GmbH | |
| RP Global Austria GmbH | |
| RP Global Austria Zwei GmbH | |
| RS3 Werbe GmbH | Vienna |
| RSO Group | Lower Austria |
| Rubicon IT GmbH | Vienna |
| Rundfunk und Telekom Regulierungs GmbH | Vienna |
| Runtastic GmbH | |
| Ruwido Austria GmbH | Salzburg |
| RZL Software GmbH | Upper Austria |
| S&T AG | Upper Austria |
| S-A-M Technologies GmbH | |
| S-Consulting | Vienna |
| S2 Hub | |
| s2G.at GmbH | |
| S4 Computer GmbH | Salzburg |
| Saber GmbH | |
| Salzburg Research | Salzburg |
| Samsung Electronics Austria GmbH | Vienna |
| Sand Software e.U. | Carinthia |
| SANOCHEMIA Pharmazeutika GmbH | |
| SAPPHIR IT & Management Training GmbH | Styria |
| Sarcura GmbH | |
| SATEC Beratung & Vertrieb GmbH | Salzburg |
| SAZ Marketing Services GmbH | Vienna |
| SBA Research gGmbH | |
| SBS Software Ges.m.b.H. | Salzburg |
| Scanpoint GmbH | Vienna |
| SCARLETRED Holding GmbH | |
| scc EDV-Beratung AG | Vienna |
| Schaub Lorenz | |
| Scheidbach Computer | Vorarlberg |
| Schloms Kabelkonfektion GmbH | Vorarlberg |
| Schrack Seconet AG | Vienna |