| Råbe & Kobberstad Holding AB | Västerås | 0 tkr |
| Rabo Invest AB | Arboga | 0 tkr |
| Råby Express Mobilservice AB | Västerås | 0 tkr |
| Rådås & Söner Aktiebolag | Köping | 0 tkr |
| Rad Heart Diagnostic (RHD) AB | Västerås | 0 tkr |
| Rådhuset i Arboga AB | Arboga | 0 tkr |
| Rå Entreprenad AB | Fagersta | 0 tkr |
| Raft Innovation Sweden AB | Västerås | 0 tkr |
| Rajamäki Holding AB | Västerås | 0 tkr |
| Räknekammaren Holding AB | Västerås | 0 tkr |
| Ralida AB | Västerås | 0 tkr |
| Ramsnäset AB | Arboga | 0 tkr |
| Ramus Holding AB | Västerås | 0 tkr |
| RA Nidum AB | Västerås | 0 tkr |
| Rasho Team AB | Västerås | 0 tkr |
| Rasmus Ekström Holding AB | Hallstahammar | 0 tkr |
| Rasmus Rosén AB | Västerås | 0 tkr |
| Rasmussen Group Holding AB | Västerås | 0 tkr |
| Rätt Steg AB | Fagersta | 0 tkr |
| Raxon AB | Fagersta | 0 tkr |
| Razzel/invest AB | Arboga | 0 tkr |
| RD Rohlin Holding AB | Skultuna | 0 tkr |
| Re6o fastigheter AB | Surahammar | 0 tkr |
| Re6o Holding AB | Surahammar | 0 tkr |
| REA Invest AB | Västerås | 0 tkr |
| Realmindz AB | Västerås | 0 tkr |
| RealProject AB | Västerås | 0 tkr |
| RealProperty Nordics AB | Västerås | 0 tkr |
| Rebyte AB | Västerås | 0 tkr |
| Redovisning & Förvaltning i Köping AB | Köping | 0 tkr |
| RedTree AB | Västerås | 0 tkr |
| REFT Holding AB | Hallstahammar | 0 tkr |
| REGAF Holding AB | Västerås | 0 tkr |
| Réka Hunyadi Velle Förvaltning AB | Västerås | 0 tkr |
| Rekyl AB | Stockholm | 0 tkr |
| Reliro AB | Västerås | 0 tkr |
| Renora Aros AB | Västerås | 0 tkr |
| Rent & Klart Flyttservice i Västmanland AB | Arboga | 0 tkr |
| R.E.R Solutions AB | Västerås | 0 tkr |
| Respecto AB | Västerås | 0 tkr |
| RespiroCraft AB | Västerås | 0 tkr |
| Restaurang Djuphamnen AB | Västerås | 0 tkr |
| Restaurang Stora Torget Sala AB | Sala | 0 tkr |
| Resultat och ledarskap AB | Västerås | 0 tkr |
| Retikom Holding AB | Västerås | 0 tkr |
| Returvägen Tunbytorp Fastigheter AB | Västerås | 0 tkr |
| Reuma Prevent Aktiebolag | Västerås | 0 tkr |
| REVA Holding AB | Västerås | 0 tkr |
| REVA Invest Aktiebolag | Västerås | 0 tkr |
| Reventi AB | Västerås | 0 tkr |