| biQube Inc | Montréal | Computer Manufacturers & Wholesalers |
| BIS Innovations | Montréal | Computer Consultants |
| Bitcoin Embassy | Montréal | Information Technologies (IT) |
| Bits 'N' Bytes (Laser Toners & Inkjet ) | Montréal | Computer Accessories & Supplies |
| Bitzer Canada Inc | Sainte-Anne-De-Bellevue | Life Sciences and Health Technologies (LSHT) |
| Bitzer Canada Inc. | Pointe-Claire | Tout Entreprises et services |
| Black Fashion Beauty Canada | Montréal | Health and Beauty |
| Blanca Canada | Montréal | Home Improvement |
| Blockstream | Montréal | Information Technologies (IT) |
| Blondedy Ferdinand Studio Canada | Montréal | Beauty & Fitness, Hairdressers & Beauty Salons |
Publicité (Desktop) Publicité (Mobile) |
| Blue Spirit Productions | Montréal | Information Technologies (IT) |
| Bluelizard Games | Montréal | Information Technologies (IT) |
| BNB Informatique | Montréal | Computer Networking |
| Boehringer Ingelheim Canada | Laval | Life Sciences and Health Technologies (LSHT) |
| Boiron Canada | Saint Bruno-De Montarville | Life Sciences and Health Technologies (LSHT) |
| Boiron Canada inc. | René-Descartes | Life Sciences and Health Technologies (LSHT) |
| Bolloré Logistics Canada | Montréal | Tout Entreprises et services |
| Bonduelle Canada Inc. | Montréal | Agri-food |
| Bosch Rexroth Canada Corp. | Longueuil | Tout Entreprises et services |
| Boston Consulting Group Canada | Montréal | Actuary Consulting & Services |
Publicité (Desktop) Publicité (Mobile) |
| Boutry Canada Ltée | Terrebonne | Tout Commerces au détail |
| Boxing Canada | Montréal | Boxing Training & Lessons |
| BP Canada | Lasalle | Tout Entreprises et services |
| Bracco Imaging Canada | Anjou | Tout Entreprises et services |
| Bracco Imaging Canada | Montréal | Life Sciences and Health Technologies (LSHT) |
| Brakasoft | Montréal | Computer Networking |
| Brasserie Labatt du Canada | Montréal | Agri-food |
| Bray Contrôles Canada Ltée | Lachine | Tout Entreprises et services |
| Brenntag Canada Inc | Lachine | Chemical Storage & Handling |
| Breuvages Cott Canada/Distributeurs Verchères | Pointe-Claire | Agri-food |
Publicité (Desktop) Publicité (Mobile) |
| Brigitte Couture | Montréal | Couture, COUTURE |
| Brigitte Couture | Park | Couture, COUTURE |
| Bristol Myers Squibb Canada Co | Montréal | Medical Clinics |
| Bristol-Myers Squibb Canada | Alfred-Nobel | Life Sciences and Health Technologies (LSHT) |
| Bristol-Myers Squibb Canada (BMS) | Montréal | Life Sciences and Health Technologies (LSHT) |
| Bristol-Myers Squibb Canada Inc. | Montréal | Life Sciences and Health Technologies (LSHT) |
| Broadcom Canada Ltd. | Montréal | Information Technologies (IT) |
| Brookfield Solutions Globales Intégrées Canada S.E.C | Montréal | Building Exterior Cleaning |
| Brother Canada | Dollard Des Ormeaux | Information Technologies (IT) |
| Bruegger's-mmmuffins Canada | Anjou | Bagels |
Publicité (Desktop) Publicité (Mobile) |
| Bruel & Kjaer Canada | Pointe-Claire | Information Technologies (IT) |
| Bruno Couture | Montréal | Couture, COUTURE |
| Buckhorn Canada Inc. | Hudson | Tout Entreprises et services |
| Buckman Laboratories of Canada Ltd. | Vaudreuil-Dorion | Tout Entreprises et services |
| Building Products of Canada | Lasalle | Tout Entreprises et services |
| Bullinformatique | Montréal | Computer Repair & Cleaning |
| Bunge Canada | Brossard | Agri-food |
| Bureau d'assurance du Canada | Centre-Ville | Tout Entreprises et services |
| BUSINESS & DÉCISION AMÉRIQUE DU NORD | Ile Perrot | Information Technologies (IT) |
| BUSINESS DEVELOPMENT BANK OF CANADA | Montréal | Blue Pages |
