| Axe Services Inc | Pointe-Aux-Trembles | Cleaning Services, Cleaning Service |
| Axiotech | Pointe-Aux-Trembles | Computer Repair & Cleaning |
| Azad Fine Chemicals | Dorval | Chemicals |
| Aéroport International de Montréal-Trudeau YUL | Dorval | Airports |
| Aéroports de Montréal | Dorval | Airports |
| Aéroports de Montréal (ADM) | Dorval | Tout Entreprises et services, Tout Tourisme et hôtels |
| Aéroports Internationaux de Montréal-Trudeau et Montréal-Mirabel | Dorval | Airports |
| b At order | Dorval | at |
| B G R Chemical Products Inc | Pointe-Claire | Chemicals |
| B S F Inc | Pointe-Claire | Aircraft Parts, Engines & Avionics |
Publicité (Desktop) Publicité (Mobile) |
| Baby-m | Pointe-Claire | Baby Products & Accessories |
| Babysitting & Cleaning services | Dorval | Babysitting Services |
| Bain Depot | Dorval | Bathroom Accessories |
| Baked2go | Dorval | Tout Commerces au détail |
| Balcons Verdun | Pointe-Aux-Trembles | Balconies |
| Ballet Montreal Performing Arts School | Pointe-Claire | Art Schools |
| Balloon Max | Pointe-Claire | Balloons |
| BAM Strategy | Pointe-Claire | Tout Entreprises et services, Tout Informatique et internet |
| Banyan Électrique 9221-9864 Québec Inc | Pointe-Claire | Electricians |
| Barazin Raphael | Montréal | Bookkeeping Software & Accounting Systems |
Publicité (Desktop) Publicité (Mobile) |
| Bariatrix Internaitonal Inc. | Pointe-Aux-Trembles | Agri-food |
| Barwood-Pilon | Dorval | Tout Entreprises et services |
| Baseline Telematique Inc | Laval | Car Alarm Systems |
| Batesville Canada | Dorval | Tout Entreprises et services |
| Batrik Medical Manufacturing Inc | Dorval | Life Sciences and Health Technologies (LSHT) |
| Baxter Corporation | Pointe-Claire | Life Sciences and Health Technologies (LSHT) |
| BCO Québec Inc | Montréal | Air Conditioning Contractors, Air Conditioning Systems & Parts |
| Beacon Roofing Supply Canada Company | Pointe-Aux-Trembles | Roofing |
| BEAM Duovac | Laval | Central Vacuum Systems |
| BEAUDAR ELECTRIQUE | Pointe-Aux-Trembles | Electricians |
Publicité (Desktop) Publicité (Mobile) |
| Beauregard & Associés | Saint-Hubert | Bookkeeping Software & Accounting Systems |
| Beausejour Hotel Apartments | Dorval | Apartment Hotels |
| Beautybyandreaxo | Dorval | Beauty & Fitness, Hairdressers & Beauty Salons |
| BeautySense | Pointe-Claire | Tout Commerces au détail |
| Beckhoff Automation Ltd. | Laval | Automation Systems & Equipment |
| Bergy Baseball & Golf | Dorval | Baseball Clubs & Lessons |
| BHM Truck Trailer Repair Garage | Dorval | Auto Repair Garages, Automobiles, Not Profit, Car Repair |
| Bibliofiche | Pointe-Claire | Child Care Equipment & Supplies |
| Bibliothèque | Dorval | Not Profit, library |
| Bibliothèque publique de Pointe-Cla... | Pointe-Claire | Tout Enseignement et savoir |
Publicité (Desktop) Publicité (Mobile) |
| Bibliothèque Saint-Charles | Pointe-Saint-Charles | Tout Enseignement et savoir |
| Big Brothers Big Sisters of West Is... | Dorval | Tout Communautés et société |
| Bijouterie Jean-Guy Aubry | Dorval | Tout Commerces au détail |
| Bio Lonreco | Dorval | Life Sciences and Health Technologies (LSHT) |
| Bioforce Canada - A. Vogel | Pointe-Claire | Tout Entreprises et services |
| Bionetix | Dorval | Biomedical Products |
| Biron – Centre de santé – Aéroport de Montréal | Dorval | Medical Clinics |
| Bistro Jardin | Pointe-Aux-Trembles | Brasseries |
| Bitumar Inc. | Montréal | Tout Entreprises et services |
| Bitzer Canada Inc. | Pointe-Claire | Tout Entreprises et services |
