| Aztus | Quebec |
| AzulCode | |
| B&B Solutions II, Inc. | Quebec |
| B&L Coaxial Connectors | Ontario |
| B-Temia | Quebec |
| B.B.D.S. Computers | Alberta |
| B.C. Communications | British Columbia |
| B.E.S.T. Funds, Inc. | |
| B.I.M. Ltd | Ontario |
| B.S.C. Technologies, Inc. | Ontario |
| B2B Connex | Ontario |
| B2B Cyber Secure | Quebec |
| B2B Wave, Inc. | Ontario |
| B2B2C, Inc. | Quebec |
| B3 Host Communications | |
| B3D Performance | Quebec |
| b4 Networks | Ontario |
| B4Checkin Ltd | Nova Scotia |
| BAASS Business Solutions, Inc. | Ontario |
| Babel | Quebec |
| Babel Média Communications | Quebec |
| Babysoft | Ontario |
| Back to the Game, Inc. | Quebec |
| Back-Bone Gear, Inc. | |
| Back2front | Ontario |
| BackB | |
| Backbone | British Columbia |
| Backbone Angels | |
| Backbone IT Services Ltd | British Columbia |
| Backland Communications, Inc. | Ontario |
| Backlash Studio | Ontario |
| Backlit Media | Ontario |
| Backstreet Creative | Alberta |
| Bad Math, Inc. | Ontario |
| Bader Lab Computational Network Biology | Ontario |
| Badhouse Ventures | British Columbia |
| Baffin Phones | |
| baie2 | Quebec |
| Baily Creative | Ontario |
| Bajai, Inc. | Ontario |
| Baka Communications, Inc. | Ontario |
| Bako Design | |
| Balance Media Ltd | Alberta |
| Bali Creative Source | Ontario |
| Baliz, Inc. | Quebec |
| Balko Technologies | |
| BallaMedia | Ontario |
| Ballard Power Systems | |
| Balluff Canada Ltd | Ontario |
| Balsillie School of International Affairs | |