| Binary Motion AB | |
| Binea | |
| Biner Group AB | |
| Binero Group AB | Stockholm |
| Binogi Sverige AB | |
| Bintel AB | |
| Bio-Works | |
| BioArctic AB | |
| Bioextrax AB | |
| Biofrigas | |
| BioGaia AB | |
| BioInvent International AB | |
| BioLamina AB | |
| Bionamic | |
| Biond | |
| Biopromic | |
| Biosergen AB | |
| Biotage | |
| Biovica International AB | |
| Bisnode Sverige AB | Stockholm |
| Bitcoin.se | |
| Bitcraze AB | |
| Bitlog Nordic AB | |
| Bits Technology | |
| BitSim AB | Stockholm |
| Bittfield AB | Västerbotten |
| Bizone | |
| Bizpart | Skåne |
| Blå Tornet Systems AB | Stockholm |
| Black Box | Stockholm |
| Blekinge Tekniska Högskola | |
| Blick Meetings AB | |
| Blipp AB | |
| BlippaCo AB | |
| Blixt Tech AB | |
| Block Zero AB | |
| BlueCall | |
| Bluefish Pharmaceuticals AB | |
| Blueflow Energy Management AB | |
| Bluerange Sweden AB | Jönköping |
| BMV Studio | Stockholm |
| BoardClic | |
| Boardeaser AB | |
| Bob Reklambyrå | |
| Boclipse | Uppsala |
| BOCOM | Västra Götaland |
| Bodil Fastigheter AB | |
| Bofink | |
| Boka Global AB | |
| Bokadirekt | |