| Wahlsten & Co Aktiebolag | Nacka | 0 tkr |
| Waigro AB | Nacka | 0 tkr |
| Wakaba Invest AB | Saltsjö-Boo | 0 tkr |
| Wallenborg förvaltning AB | Saltsjöbaden | 0 tkr |
| Wallerstedt Invest AB | Saltsjöbaden | 0 tkr |
| Wallnut Engineering och Mountaineering AB | Nacka | 0 tkr |
| Walunim Invest AB | Bromma | 0 tkr |
| Wanda Jakobsson AB | Saltsjö-Boo | 0 tkr |
| Wass Auto AB | Saltsjö-Boo | 0 tkr |
| Way 2 Cool AB | Nacka | 0 tkr |
| WCN Sverige AB | Saltsjö-Boo | 0 tkr |
| We are Legacy AB | Nacka Strand | 0 tkr |
| WE Dental Holding AB | Nacka | 0 tkr |
| WEHAND AB | Nacka | 0 tkr |
| Weijnitz Management AB | Stockholm | 0 tkr |
| Weilar Holding AB | Saltsjö-Boo | 0 tkr |
| WEJF Förvaltnings AB | Saltsjö-Duvnäs | 0 tkr |
| Wendigo Aktiebolag | Saltsjö-Boo | 0 tkr |
| Wennas Consulting AB | Nacka | 0 tkr |
| Wennman Holding AB | Saltsjö-Boo | 0 tkr |
| Wenode AB | Saltsjö-Boo | 0 tkr |
| WE Plus AB | Saltsjöbaden | 0 tkr |
| We Plus Holding AB | Saltsjöbaden | 0 tkr |
| Wermdö Racketservice Aktiebolag | Värmdö | 0 tkr |
| WESSEL KONSULT AB | Saltsjöbaden | 0 tkr |
| Westrup Investment & Holding Group AB | Älta | 0 tkr |
| WeTree AB | Nacka | 0 tkr |
| Wetterström konsult AB | Nacka | 0 tkr |
| Wgren Holding AB | Nacka | 0 tkr |
| WhenInSpace AB | Nacka | 0 tkr |
| Wherryness AB | Saltsjöbaden | 0 tkr |
| White Dwarf Technology Aktiebolag | Saltsjöbaden | 0 tkr |
| Whittingham Invest AB | Nacka | 0 tkr |
| WHR medicus AB | Nacka | 0 tkr |
| Why Entropy AB | Nacka | 0 tkr |
| Why invest AB | Saltsjö-Boo | 0 tkr |
| Why not works Aktiebolag | Stockholm | 0 tkr |
| Whyshore AB | Nacka | 0 tkr |
| Wide Invention AB | Älta | 0 tkr |
| Wiik Inredning & Design AB | Saltsjö-Boo | 0 tkr |
| Wiljander investeringsaktiebolag | Nacka | 0 tkr |
| Willbell AB | Saltsjöbaden | 0 tkr |
| Willemo Kontorslösningar AB | Saltsjöbaden | 0 tkr |
| Willevall AB | Saltsjöbaden | 0 tkr |
| William Förvaltning AB | Saltsjöbaden | 0 tkr |
| Willowcrest AB | Saltsjöbaden | 0 tkr |
| Wilus AB | Saltsjöbaden | 0 tkr |
| Winblad Invest AB | Saltsjö-Boo | 0 tkr |
| WindJammer AB | Saltsjö-Boo | 0 tkr |
| Winning Insights AB | Täby | 0 tkr |