| Siluett Fastighets Aktiebolag | Saltsjö-Boo | 0 tkr |
| Silvander Holding AB | Saltsjö-Boo | 0 tkr |
| Silver Taxi, Gunnar Johansson Aktiebolag | Älta | 0 tkr |
| Simon Bergström Holding AB | Älta | 0 tkr |
| SimTheory AB | Nacka | 0 tkr |
| SINDAC CONSULTING Aktiebolag | Uppsala | 0 tkr |
| Sindahl Holding AB | Nacka | 0 tkr |
| Singing Bird AB | Saltsjöbaden | 0 tkr |
| Sinsera AB | Saltsjö-Duvnäs | 0 tkr |
| Siriusvägen Invest AB | Saltsjöbaden | 0 tkr |
| Sitara Exotic furniture and homeware from the Far East AB | Saltsjöbaden | 0 tkr |
| Sitoco Holding AB | Saltsjö-Boo | 0 tkr |
| Sito Förvaltning AB | Saltsjöbaden | 0 tkr |
| Sjöab AB | Nacka | 0 tkr |
| Sjöö Kaffe AB | Älta | 0 tkr |
| Sjövägen Invest AB | Saltsjöbaden | 0 tkr |
| Sjukvårds Teknik Sweden AB | Nacka | 0 tkr |
| Skaja Consulting AB | Saltsjö-Duvnäs | 0 tkr |
| Skandinavian Rent AB | Gustavsberg | 0 tkr |
| Skaraborgs Utvecklingsfond I AB | Stockholm | 0 tkr |
| Skärlind Holding AB | Nacka | 0 tkr |
| Skarpnäs 6:18 Fastigheter AB | Uppsala | 0 tkr |
| Skärskog Invest AB | Lomma | 0 tkr |
| Skeviken Investments AB | Älta | 0 tkr |
| Skogalund Litteratur AB | Nacka | 0 tkr |
| Skogström & Andersson AB | Nacka | 0 tkr |
| Skolberga Psykiatri AB | Saltsjöbaden | 0 tkr |
| Sköld & Biribakken Holding AB | Stockholm | 0 tkr |
| Skoogh Futures AB | Nacka | 0 tkr |
| Skrimsjö Invest AB | Västra Frölunda | 0 tkr |
| Skuruborg AB | Stockholm | 0 tkr |
| Slimdog Holding AB | Stockholm | 0 tkr |
| Slim Fish AB | Stockholm | 0 tkr |
| S&L Kök AB | Tyresö | 0 tkr |
| SLTK AB | Saltsjöbaden | 0 tkr |
| Sluggoriet AB | Saltsjöbaden | 0 tkr |
| Små grodorna AB | Saltsjöbaden | 0 tkr |
| SmålandsCalle AB | Saltsjöbaden | 0 tkr |
| Smalarestarkare Konsult AB | Nacka | 0 tkr |
| Small Seed AB | Danderyd | 0 tkr |
| Smart Construction Sweden AB | Nacka | 0 tkr |
| Smiling Frog AB | Sundbyberg | 0 tkr |
| Smilor Oral Care AB | Saltsjöbaden | 0 tkr |
| Smolsky Equestrian AB | Älta | 0 tkr |
| Smolsky Holding AB | Älta | 0 tkr |
| Smulan Invest AB | Ingarö | 0 tkr |
| SMWA Holding AB | Saltsjö-Boo | 0 tkr |
| SN4JS AB | Saltsjö-Boo | 0 tkr |
| Snake Citys dotter AB | Saltsjö-Boo | 0 tkr |
| Snarf AB | Saltsjöbaden | 0 tkr |