| Blockchain Foundry, Inc. | Ontario |
| Blockchain Futurist Conference | |
| Blockchain Guru | Alberta |
| Blockchain Intelligence Group | British Columbia |
| Blockchain Research Institute | Ontario |
| Blockchain Tech Ltd | British Columbia |
| BlockchainK2 | British Columbia |
| BlockchainMind | |
| Blockchainmind | |
| Blockdog | |
| BlockDoS.net | Ontario |
| Blockgeeks, Inc. | Ontario |
| Blockhead Technologies, Inc. | |
| BlockLab | |
| Blockstream | British Columbia |
| BlockWiz Solutions Ltd | Ontario |
| BlockX Labs | Ontario |
| BlocPal | |
| BlocStat | |
| Blogs Canada | Ontario |
| Blomeley Communications, Inc. | Ontario |
| Bloom | Ontario |
| Bloom Marketing | British Columbia |
| Bloom Search Marketing, Inc. | Quebec |
| Bloom Software | |
| BloomDev | Ontario |
| Bloorsoft | |
| Blossom Social | |
| Blox Labs, Inc. | |
| bluArc | Ontario |
| Bluberi | Quebec |
| Blubrown Communications, Inc. | Alberta |
| Blue | |
| Blue Aardvark Graphic Communication | Ontario |
| Blue Angel Technical Services | Manitoba |
| Blue Ant Media | Ontario |
| Blue Bolt Services | |
| Blue Cat Design | Ontario |
| Blue Communications, Inc. | Newfoundland and Labrador |
| Blue Cow Marketing | |
| Blue Cross Solutions | |
| Blue Curtain Technology | Alberta |
| Blue Eden | |
| Blue Edge Tech | British Columbia |
| Blue Eyed Solutions | |
| Blue Flamingo | Ontario |
| Blue J Legal, Inc. | |
| Blue Labs | Quebec |
| Blue Line Innovations, Inc. | Ontario |
| Blue Line IT Solutions | Ontario |