| SMAK Living AB | Vrena | 0 tkr |
| Snoopy Consulting AB | Stigtomta | 0 tkr |
| Snöyra Brynjan 5 AB | Nyköping | 0 tkr |
| Snöyra Holding AB | Nyköping | 0 tkr |
| Snöyra Råby AB | Nyköping | 0 tkr |
| Söderin Revision AB | Nyköping | 0 tkr |
| Solén Music AB | Åkersberga | 0 tkr |
| Solgo AB | Nyköping | 0 tkr |
| Solmyr AB | Nyköping | 0 tkr |
| Sörmland Real AB | Nyköping | 0 tkr |
| Sörmlandsbostäder Utvecklings AB | Falun | 0 tkr |
| Sörmlands Bränneri AB | Nyköping | 0 tkr |
| Sörmlandskustens omsorg AB | Nyköping | 0 tkr |
| Sörmland & Sörmland Shooting AB | Nyköping | 0 tkr |
| Sourcebranch AB | Tystberga | 0 tkr |
| Spånga Volt AB | Stockholm | 0 tkr |
| S-pellets AB | Tystberga | 0 tkr |
| SPETTIS AB | Nyköping | 0 tkr |
| Stadsudden Asken 2 AB | Stockholm | 0 tkr |
| Stationsfastigheter i Nyköping AB | Nyköping | 0 tkr |
| Stefan Englund Holding AB | Nyköping | 0 tkr |
| Stenkil Holding AB | Nyköping | 0 tkr |
| Stenvik OXD AB | Stockholm | 0 tkr |
| Stetson AB | Nyköping | 0 tkr |
| STIGTOMTA INVEST AB | Nyköping | 0 tkr |
| Stora Hotellet i Nyköping Förvaltning AB | Nyköping | 0 tkr |
| Stora Marsäng Holding AB | Nyköping | 0 tkr |
| Stora Stygga AB | Nyköping | 0 tkr |
| Storgatan ett i Nyköping Fastighet AB | Björkvik | 0 tkr |
| Storköksgruppen Invest AB | Nyköping | 0 tkr |
| Storstor AB | Stigtomta | 0 tkr |
| Strike It AB | Nyköping | 0 tkr |
| Strimlusen Förvaltnings AB | Nyköping | 0 tkr |
| Strossen AB | Nyköping | 0 tkr |
| Studio Tartib AB | Tierp | 0 tkr |
| success by lönnmo AB | Nyköping | 0 tkr |
| Sundbergs förvaltning i Nyköping AB | Ydre | 0 tkr |
| Sundbergs Isolerings Aktiebolag | Stigtomta | 0 tkr |
| Suneco AB | Nyköping | 0 tkr |
| SunnaPharm AB | Nyköping | 0 tkr |
| Supersonic Savings AB | Nyköping | 0 tkr |
| Svansta Holding AB | Nyköping | 0 tkr |
| Svärdsklova SkärgårdsFastighet AB | Nyköping | 0 tkr |
| Svarvargatan AB | Nyköping | 0 tkr |
| Sveadanerna Food AB | Nyköping | 0 tkr |
| Svenska Octav AB | Nyköping | 0 tkr |
| Swedish marine & air consult AB | Nyköping | 0 tkr |
| Sweet Café Sweden AB | Oxelösund | 0 tkr |
| Swe Flights AB | Nyköping | 0 tkr |
| Systrarna JB AB | Nävekvarn | 0 tkr |