| Baker Tilly Radek Transactions AB | Nyköping | 0 tkr |
| Balera Invest AB | Eskilstuna | 0 tkr |
| Balkongteam Sverige AB | Eskilstuna | 0 tkr |
| Balsta Förvaltnings AB | Eskilstuna | 0 tkr |
| B Andersson Holding AB | Strängnäs | 0 tkr |
| Bandstigen Fastigheter AB | Eskilstuna | 0 tkr |
| Banquin Holding AB | Eskilstuna | 0 tkr |
| Bapof AB | Partille | 0 tkr |
| Barbro Frisch Consulting AB | Mariefred | 0 tkr |
| Barken 26 Katrineholm AB | Katrineholm | 0 tkr |
| Bärmo AB | Trosa | 0 tkr |
| Barvalappen 1 Holding AB | Eskilstuna | 0 tkr |
| Barvalappen 2 Holding AB | Eskilstuna | 0 tkr |
| Barvalappen 3 Holding AB | Eskilstuna | 0 tkr |
| Basico AB | Nykvarn | 0 tkr |
| Bassam & Dimce AB | Nyköping | 0 tkr |
| Battlefront AB | Nyköping | 0 tkr |
| BAUT AB | Eskilstuna | 0 tkr |
| Båven Gården Aktiebolag | Sparreholm | 0 tkr |
| BAVI Holdingbolag AB | Ålberga | 0 tkr |
| Bay Bridge AB | Skogstorp | 0 tkr |
| B&B Ekonomi AB | Eskilstuna | 0 tkr |
| BBI Holding AB | Katrineholm | 0 tkr |
| BC Svensson Offensiv AB | Strängnäs | 0 tkr |
| BDE Invest AB | Vagnhärad | 0 tkr |
| Beabo i Eskilstuna AB | Eskilstuna | 0 tkr |
| BEEH Holding AB | Eskilstuna | 0 tkr |
| Bee Swede Aktiebolag | Arboga | 0 tkr |
| Befina AB | Eskilstuna | 0 tkr |
| Beitun AB | Eskilstuna | 0 tkr |
| Belémo AB | Eskilstuna | 0 tkr |
| Believe and Achieve AB | Nyköping | 0 tkr |
| Bella's Group AB | Trosa | 0 tkr |
| Belltower Properties AB | Åkers Styckebruk | 0 tkr |
| Bene IT AB | Nyköping | 0 tkr |
| Bengt Persson i Vingåker Invest AB | Vingåker | 0 tkr |
| Bennetoft Consulting AB | Katrineholm | 0 tkr |
| Bercon AB | Trosa | 0 tkr |
| Berglund Management Consulting AB | Eskilstuna | 0 tkr |
| Bergman Ekonomi- & Restaurangkonsult AB | Mariefred | 0 tkr |
| Bergman MFS AB | Stigtomta | 0 tkr |
| Bergs Gård Holding AB | Västerljung | 0 tkr |
| Bergshammar Ekeby 6:58 AB | Nyköping | 0 tkr |
| Bergshammars Förvaltnings AB | Nyköping | 0 tkr |
| Bergstugan Bygg & Entreprenad AB | Husby-Rekarne | 0 tkr |
| Bergvall Engineering AB | Stallarholmen | 0 tkr |
| BERTHE Holding AB | Eskilstuna | 0 tkr |
| Best Promotion Förvaltning i Nyköping AB | Nyköping | 0 tkr |
| BGGR Holding AB | Eskilstuna | 0 tkr |
| BG Transportutbildningar AB | Skogstorp | 0 tkr |