| Bleu Blanc Tech | Quebec |
| Bleu3, Inc. | Quebec |
| Bleuet Design | |
| Bleuoutremer | Quebec |
| Blinco Systems, Inc. | Ontario |
| BlindDrop Design, Inc. | Alberta |
| Blink Digital | Alberta |
| BLiNQ | Ontario |
| Bliq Photonics | Quebec |
| Blisslogik, Inc. | Alberta |
| Blitzen | Ontario |
| Blli & Dave Computer Repair | Ontario |
| Block 64 | Ontario |
| Block 64 Corporation | Ontario |
| Block Software | |
| Blockchain Association of Canada | |
| 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 | |
| Blockdog | |
| BlockDoS.net | Ontario |
| Blockgeeks, Inc. | Ontario |
| Blockhead Technologies, Inc. | |
| 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 |
| BloomDev | Ontario |
| Blossom Social | |
| Blox Labs, Inc. | |
| bluArc | Ontario |
| Bluberi | Quebec |
| Blubrown Communications, Inc. | Alberta |
| Blue Aardvark Graphic Communication | Ontario |
| Blue Angel Technical Services | Manitoba |
| Blue Ant Media | Ontario |
| Blue Cat Design | Ontario |
| Blue Communications, Inc. | Newfoundland and Labrador |
| Blue Curtain Technology | Alberta |