| Wekudata AB | |
| Weld Your Own App AB | Stockholm |
| Wellbefy | |
| Wellstreet | Stockholm |
| Wematter | |
| Werlabs AB | |
| West Code Group | |
| Wetail AB | |
| Wetal Lab AB | |
| White Red Consulting AB | |
| Whywaste AB | |
| Wihlborgs Fastigheter AB | |
| WiigData AB | Stockholm |
| Wikinggruppen | Gävleborg |
| Wild Games AB | |
| WIN Water | |
| Wincher International AB | |
| Windeed AB | |
| Windy AB | |
| WINNIIO AB | |
| Winningtemp | |
| Winston | |
| Wint | |
| WirelessCar | Västra Götaland |
| Wise IT | |
| Wisory International AB | |
| Wixström Edt AB | Västerbotten |
| WntResearch AB | |
| Wombit | |
| WonderBrand AB | |
| Woof | |
| WordFinder | Västra Götaland |
| WordPress hemsidor | Stockholm |
| Workamo | |
| WorkaroundTown Sverige AB | |
| World Maritime University | |
| World Water Week | |
| Worldfavor AB | |
| Worldish AB | |
| Woshapp | |
| Wrebit | |
| X Shore | |
| Xantage | |
| Xapero | Norrbotten |
| Xbrane Biopharma | |
| Xcerion | Östergötland |
| Xenergic | |
| Xenit | |
| Xenophon | Stockholm |
| Xensam AB | |