| Bizbee Creative | British Columbia |
| Bizcom Telecom | British Columbia |
| BizEquity | |
| BizFist | |
| BizNets.com | Ontario |
| Bizont | |
| Bizquad Technologies, Inc. | Ontario |
| BizTech College | Ontario |
| Biztree, Inc. | Quebec |
| bizZone, Inc. | Ontario |
| BJ Média | Quebec |
| BJF Trading Group | Ontario |
| BJH Consulting | Alberta |
| BJW Computers Electronics | New Brunswick |
| BK Two-Way Radio Ltd | British Columbia |
| BKL Design Group, Inc. | Ontario |
| BKR Capital | |
| BL Software | |
| bl.solutions | Quebec |
| Black Atlas Creative | Saskatchewan |
| Black Bike Media, Inc. | Ontario |
| Black Boys Code | |
| Black Business Initiative | |
| Black Cap Design | Ontario |
| Black Chip Responsive Design | British Columbia |
| Black Diamond Marketing | British Columbia |
| Black Diamond Software | |
| Black Entrepreneurship Through Acquisition Incubator | Ontario |
| Black Knight Security Ltd | British Columbia |
| Black Octopus Agency | |
| Black Opportunity Fund | |
| Black Patch Information Systems, Inc. | Ontario |
| Black Pearl Computing Ltd | British Columbia |
| Black Press Media Ltd | |
| Black Professionals in Tech Network | |
| Black River | Ontario |
| Black Trike | Ontario |
| BlackBean Marketing Ltd | |
| Blackberry Creative | British Columbia |
| BlackBerry Ltd | Ontario |
| BlackBerry QNX | Ontario |
| Blackbird Interactive | |
| Blackbox AI | |
| Blackburn & Blackburn, Inc. | Quebec |
| Blackcat Informatics, Inc. | British Columbia |
| BlackCat SEO, Inc. | |
| Blackcreek Technologies | Ontario |
| BlackDot.ca | Ontario |
| BlackDuckAgency | |
| BLACKink Design | New Brunswick |