| Blå huset Dan Boström Aktiebolag | Sollentuna | 0 tkr |
| Blå Huset i Täby AB | Sollentuna | 0 tkr |
| Blanche Life Science Advisors AB | Sollentuna | 0 tkr |
| BL Förvaltning i Sjöberg AB | Sollentuna | 0 tkr |
| Blohm Consulting AB | Ljusterö | 0 tkr |
| BlombergSkoglind AB | Sollentuna | 0 tkr |
| Blomquist & Sons information AB | Sollentuna | 0 tkr |
| BL Smide AB | Kista | 0 tkr |
| Bluebrick Holding AB | Sollentuna | 0 tkr |
| BlueDay Business AB | Sollentuna | 0 tkr |
| BlueDay Invest AB | Sollentuna | 0 tkr |
| blunt AB | Sollentuna | 0 tkr |
| Blyglas AB | Sollentuna | 0 tkr |
| BMOW Consulting AB | Sollentuna | 0 tkr |
| BMS Gruppen AB | Sollentuna | 0 tkr |
| BNB Future Aktiebolag | Sollentuna | 0 tkr |
| Boa Onda Invest AB | Sollentuna | 0 tkr |
| BOL kapital och tillgångsförvaltning AB | Nynäshamn | 0 tkr |
| BOLUND KONSULT AB | Sollentuna | 0 tkr |
| Bondkatt Capital AB | Sollentuna | 0 tkr |
| Bonmont AB | Sollentuna | 0 tkr |
| Booklab AB | Stockholm | 0 tkr |
| Borätt i Stockholm BORIS Aktiebolag | Ulricehamn | 0 tkr |
| Borgvägen Holding AB | Sollentuna | 0 tkr |
| Bosö Holding AB | Täby | 0 tkr |
| Bössvägen Förvaltning AB | Sollentuna | 0 tkr |
| BOSTADSMÄKLARNA BRV THOMAS WALLIN Aktiebolag | Sollentuna | 0 tkr |
| Bower Investment AB | Sollentuna | 0 tkr |
| BPT Consulting AB | Täby | 0 tkr |
| Brace for Impact AB | Sollentuna | 0 tkr |
| Brandt Solutions AB | Sollentuna | 0 tkr |
| Bricegroup Holding AB | Stockholm | 0 tkr |
| Brickstellar AB | Sollentuna | 0 tkr |
| Bröderna Möller AB | Sollentuna | 0 tkr |
| Brodin Shipping Aktiebolag | Stockholm | 0 tkr |
| Broker Holding 1 AB | Solna | 0 tkr |
| Brunnr AB | Stockholm | 0 tkr |
| Bryne Consulting AB | Sollentuna | 0 tkr |
| BT Rian Kapitalförvaltning AB | Sollentuna | 0 tkr |
| Bukettmakarna Edsvik AB | Sollentuna | 0 tkr |
| Bullando Aktiebolag | Sollentuna | 0 tkr |
| Burehag & Co AB | Sollentuna | 0 tkr |
| Burmans Lastmaskiner AB | Sollentuna | 0 tkr |
| Bursan Holding AB | Spånga | 0 tkr |
| Business Intelligence Insight Sweden AB | Hägersten | 0 tkr |
| BVB Konsult AB | Solna | 0 tkr |
| B.V.V. Eco House AB | Norsborg | 0 tkr |
| BWM Holding AB | Sollentuna | 0 tkr |
| BWM S Fastighet AB | Sollentuna | 0 tkr |
| B.X. Utvecklings AB | Sundbyberg | 0 tkr |