| BrainyYack | Ontario |
| Braithwaite Technology Consultants, Inc. | Ontario |
| Bralin Technology Solutions | Saskatchewan |
| Brampton Latop | Ontario |
| Branch Out | |
| Brand & Mortar | |
| Brand and Bridge | British Columbia |
| Brand Roots | |
| Brand U Agency, Inc. | |
| Brand X Office Supplices, Inc. | Alberta |
| Brandbeast | |
| Brandfire | Ontario |
| Brandom Digital Marketing | |
| Brandon Computers | Manitoba |
| Brandon Gray Internet Services, Inc. | Ontario |
| Brandon University | Manitoba |
| Brandon University - Department of Mathematics & Computer Science | Manitoba |
| BrandPilot AI | |
| BrandProject | Ontario |
| Brandwashed | |
| BrandWebDirect.ca | |
| Branex | |
| Branham Group, Inc. | Ontario |
| Brantco Technologies, Inc. | Ontario |
| BrantTel Networks | Ontario |
| Brash Product Development, Inc. | |
| Brassard Informatique | Quebec |
| Bravad | Quebec |
| Bravatech | Ontario |
| Bravenet Web Services, Inc. | British Columbia |
| Bravo Telecom | Quebec |
| Bre-Mar Office Equipment, Inc. | Ontario |
| Breakout Creatives | |
| Breakpoint Solutions | |
| Breathe Biomedical | Manitoba |
| BreatheSuite, Inc. | |
| Bredet Services, Inc. | Ontario |
| Breeze | British Columbia |
| BreezeMaxWeb | Ontario |
| Breken Group, Inc. | Ontario |
| Brenley Dueck | Manitoba |
| Brenna O'Brien | Ontario |
| Brennix, Inc. | Ontario |
| Brent Shea.com | Ontario |
| Brentview Electronics | Ontario |
| Breqwatr | |
| Breton Group | |
| Breton Technologies Ltd | |
| BriaCell Therapeutics Corporation | |
| Brian Blatnicki | |