| Stella Montana Enterprise AB | Västerås | 0 tkr |
| Stenberg & Stenberg AB | Västerås | 0 tkr |
| Stenklossen i Västerås AB | Västerås | 0 tkr |
| Stenteknik i Västerås Holding AB | Västerås | 0 tkr |
| ST Gruppen AB | Västerås | 0 tkr |
| ST HAHN INVEST AB | Västerås | 0 tkr |
| Stig Strömgren AB | Västerås | 0 tkr |
| Stillman Edlund Tuvesson AB | Hallstahammar | 0 tkr |
| Still Spaces AB | Västerås | 0 tkr |
| Stina & Sjunnes gatukök AB | Sala | 0 tkr |
| StjärnCenter Holding AB | Västerås | 0 tkr |
| STJ Engineering AB | Kolsva | 0 tkr |
| STJM Holding AB | Västerås | 0 tkr |
| STL Stig Lundberg Consulting AB | Västerås | 0 tkr |
| Stockinger Holding AB | Västerås | 0 tkr |
| Storaxen AB | Västerås | 0 tkr |
| Storckenfeldt Ventures AB | Västerås | 0 tkr |
| Storgatan i Hallstahammar Fastighets AB | Hallstahammar | 0 tkr |
| Storljusön AB | Sala | 0 tkr |
| Storm Capital AB | Göteborg | 0 tkr |
| Storno Consulting AB | Västerås | 0 tkr |
| Storskäret Holding AB | Västerås | 0 tkr |
| Stortorget i Västerås 1 AB | Västerås | 0 tkr |
| Straight, Forward & How AB | Västerås | 0 tkr |
| Strajkafur AB | Västerås | 0 tkr |
| strandgårdens begravningsbyrå AB | Fagersta | 0 tkr |
| Strasbo AB | Täby | 0 tkr |
| Stratepic AB | Stockholm | 0 tkr |
| Strevent Holding AB | Västerås | 0 tkr |
| Stridsberg i Sala AB | Sala | 0 tkr |
| STRMSHLM Allteknik AB | Strömsholm | 0 tkr |
| Strömsudden Consulting AB | Västerås | 0 tkr |
| Strömvik Invest AB | Västerås | 0 tkr |
| Strong and Confident AB | Västerås | 0 tkr |
| Structorix Consulting AB | Västerås | 0 tkr |
| Struktiva AB | Västerås | 0 tkr |
| Strukton Rail Västerås AB | Västerås | 0 tkr |
| Studio Gardkvist AB | Västerås | 0 tkr |
| Studio Hako AB | Västerås | 0 tkr |
| Studioworks of Sweden AB | Västerås | 0 tkr |
| Styrbiten Invest AB | Västerås | 0 tkr |
| Suecia Hus AB | Kolsva | 0 tkr |
| SunByte AB | Västerås | 0 tkr |
| Sundänge Holding AB | Köping | 0 tkr |
| Sundholm Bygg AB | Kvicksund | 0 tkr |
| Sundkvist World Enterprise AB | Västerås | 0 tkr |
| Sundqvist Bil och Motorsport AB | Västerås | 0 tkr |
| Sunnerstaholm Invest AB | Stockholm | 0 tkr |
| SunStop AB | Västerås | 0 tkr |
| Sunstreet Energy Holding AB | Västerås | 0 tkr |