| Bunz, Inc. | Ontario |
| Buoyancy Works Software Corporation | |
| Burden Marketing Company | |
| Burdig Informatique | |
| Bureautech Laurentides, Inc. | Quebec |
| Bureautique Expert | Quebec |
| Bureautique FTI | Quebec |
| Bureautique Reno, Inc. | Quebec |
| Burke & Burke | Nova Scotia |
| Burl-Oak Systems | Ontario |
| Burli Software, Inc. | British Columbia |
| Burlington Computer Clinic | Ontario |
| Burlington Network Services | Ontario |
| Burlington SEO Services, Web Design & Internet Marketing | Ontario |
| Burman University | Alberta |
| BurningThumb Studios | British Columbia |
| Buropro Citation | |
| Burr Oak Software | Ontario |
| Burr Oak Software, Inc. | Ontario |
| Bush Marketing | |
| Business + Higher Education Roundtable | |
| Business Analytics Consulting Group Canada Ltd | Ontario |
| Business Clinic | |
| Business Cloud, Inc. | Ontario |
| Business Computer Network | Ontario |
| Business Computing Solutions, Inc. | Alberta |
| Business Council of Canada | |
| Business Icons | British Columbia |
| Business in a Box | |
| Business Infusions | Alberta |
| Business Innovation Technologies, Inc. | Ontario |
| Business Instincts Group | |
| Business Media | Ontario |
| Business Sensor ERP | |
| Business Solutions With Integrity | Ontario |
| Business System 1 | British Columbia |
| Business Systems Lustre | British Columbia |
| Business Technology Consulting | Prince Edward Island |
| Busitech, Inc. | Ontario |
| BusPlanner.com | Ontario |
| Busy Bryan Design | Ontario |
| BusyQA | |
| Butterfly IT Solutions & Projects | |
| Button | |
| BuyAndSellABusiness.com | |
| Buyatab | |
| BuyDirect Telecom | Ontario |
| BuyProperly, Inc. | Ontario |
| Buz Software, L.P. | Ontario |
| Buzz Internet Marketing | |