| BHC | Ontario |
| BHD Ltd | Alberta |
| BHive | |
| BHIVE Social Media Labs | Ontario |
| BHS Composites, Inc. | Quebec |
| BHS Composites, Inc. | |
| BIA Consulting, Inc. | Ontario |
| BIAPRO | Ontario |
| Biblio Mondo | Quebec |
| BiblioCommons Corporation | |
| BicDroid, Inc. | |
| Bidali, Inc. | |
| Biedersoft Works, Inc. | Alberta |
| Biffusion | Quebec |
| Bifrost Cloud, Inc. | |
| Big Bear Software | Alberta |
| Big Blue Bubble | Ontario |
| Big Brother Sécurité | Quebec |
| Big Cick | Alberta |
| Big Data & Analytics Summit Canada | |
| Big Data and AI Toronto | |
| Big Fish Creative | |
| Big Picture Interactive | Ontario |
| Big Rock Communications Ltd | Alberta |
| Big Room, Inc. | |
| Big Surge | Prince Edward Island |
| Big Time Design and Communication, Inc. | Ontario |
| Big Viking Games | Ontario |
| BIG3 Media | British Columbia |
| BigBlock Studios | Ontario |
| bigDATA Computer Services | New Brunswick |
| BigEcommerce.com | Alberta |
| Bigpacific Creative | British Columbia |
| BigRoad, Inc. | Ontario |
| BigTurns Professional Services Ltd | British Columbia |
| BiLL | Quebec |
| Bill Avakian Computers, Inc. | Ontario |
| Bill Cooke Designs | Ontario |
| BillboardWebServices.com | British Columbia |
| Billi | |
| Billie | |
| BillMINDER Medical Software | Ontario |
| Billy Smith Design Group | |
| BinariesLid Ltée | |
| Binary Stream | British Columbia |
| BinaryOps Software, Inc. | |
| Binatech System Solutions | Ontario |
| Binatek, Inc. | Quebec |
| Bindy | Ontario |
| Binnj, Inc. | Ontario |