| Tandläkare Marie Berglöf Aktiebolag | Västerås | 0 tkr |
| Tandvårdscentrum Sverige Holding AB | Kvicksund | 0 tkr |
| Tasters International AB | Västerås | 0 tkr |
| Täuber Management AB | Västerås | 0 tkr |
| Tawast 2.0 AB | Västerås | 0 tkr |
| Tawast AB | Västerås | 0 tkr |
| TB Printsolutions Holding AB | Västerås | 0 tkr |
| TDS Holding AB | Västerås | 0 tkr |
| team.blue Scandinavia AB | Västerås | 0 tkr |
| Team Invest Sweden AB | Västerås | 0 tkr |
| Team Sub 730 Västerås AB | Västerås | 0 tkr |
| Teamtaste AB | Västerås | 0 tkr |
| Team Tidö AB | Västerås | 0 tkr |
| Tech2 Holding Sweden AB | Enköping | 0 tkr |
| Tech2 RE Sweden AB | Enköping | 0 tkr |
| Tedlundis AB | Järfälla | 0 tkr |
| Teknobildning Sverige AB | Västerås | 0 tkr |
| TensorBridge Invest AB | Västerås | 0 tkr |
| Tenwheeler AB | Västerås | 0 tkr |
| TEPES Anläggningar Holding AB | Västerås | 0 tkr |
| TeSt Holding AB | Västerås | 0 tkr |
| Tetrix Engineering AB | Västerås | 0 tkr |
| TF Fröholmen AB | Västerås | 0 tkr |
| TG Marina Holding AB | Västerås | 0 tkr |
| THB AB | Västerås | 0 tkr |
| The back & wife holding AB | Västerås | 0 tkr |
| The Bucketlist Company AB | Västerås | 0 tkr |
| The Manual Scandinavia AB | Järfälla | 0 tkr |
| Therese Turpin AB | Västerås | 0 tkr |
| Therese Watkinson Invest AB | Västerås | 0 tkr |
| Third Circle AB | Hallstahammar | 0 tkr |
| Tholin Invest AB | Västerås | 0 tkr |
| Thorsén Pörhö AB | Västerås | 0 tkr |
| ThoWil Management AB | Västerås | 0 tkr |
| Thyni Företagsrådgivning AB | Falun | 0 tkr |
| TIB Holding AB | Västerås | 0 tkr |
| Tick Tack Service AB | Västerås | 0 tkr |
| TIDA Invest AB | Västerås | 0 tkr |
| Tidö-Lindö Konsult AB | Järfälla | 0 tkr |
| Tidö-Lindö Plåtslageri AB | Västerås | 0 tkr |
| TIFO i Västerås AB | Västerås | 0 tkr |
| TIFO i Västmanland AB | Västerås | 0 tkr |
| Ti Me Development AB | Stockholm | 0 tkr |
| TJM Holding i Västerås AB | Västerås | 0 tkr |
| TJOLOLO AB | Västerås | 0 tkr |
| TK9 Consulting AB | Västerås | 0 tkr |
| TKEC Holding AB | Västerås | 0 tkr |
| T & L Hammar AB | Västerås | 0 tkr |
| T Lind Holding AB | Västerås | 0 tkr |
| TLL Mekankonsult Aktiebolag | Göteborg | 0 tkr |