| 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 |
| Babar En Ville | Westmount | Book Stores |
| Babysitting & Cleaning services | Dorval | Babysitting Services |
| Bagels on Greene | Westmount | Bagels |
| Bain Depot | Dorval | Bathroom Accessories |
| Baked2go | Dorval | Tout Commerces au détail |
Publicité (Desktop) Publicité (Mobile) |
| Bantam Materials International | Westmount | Chemicals |
| Baron Abrams | Westmount | Business Lawyers |
| Baron Realty / Immobilier Baron | Westmount | Tout Entreprises et services |
| Barwood-Pilon | Dorval | Tout Entreprises et services |
| Batesville Canada | Dorval | Tout Entreprises et services |
| Batrik Medical Manufacturing Inc | Dorval | Life Sciences and Health Technologies (LSHT) |
| Beausejour Hotel Apartments | Dorval | Apartment Hotels |
| Beautybyandreaxo | Dorval | Beauty & Fitness, Hairdressers & Beauty Salons |
| Beaver Tails Nordic Ski Club | Montréal | Tout Arts et divertissement |
| Ben & Tournesol | Westmount | Tout Commerces au détail |
Publicité (Desktop) Publicité (Mobile) |
| Benson Joan | Westmount | Business Lawyers |
| Bergy Baseball & Golf | Dorval | Baseball Clubs & Lessons |
| Best Western Plus Montreal Downtown... | Centre-Ville | Tout Tourisme et hôtels |
| Best Western Ville-Marie Hotel & Su... | Centre-Ville | Tout Tourisme et hôtels |
| BHM Truck Trailer Repair Garage | Dorval | Auto Repair Garages, Automobiles, Not Profit, Car Repair |
| Bibliothèque | Dorval | Not Profit, library |
| Bibliothèque publique de Westmount | Westmount | 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) |
Publicité (Desktop) Publicité (Mobile) |
| BioAmber Inc | Montréal | Life Sciences and Health Technologies (LSHT) |
| Bionetix | Dorval | Biomedical Products |
| Biopra | Montréal | Life Sciences and Health Technologies (LSHT) |
| Biron – Centre de santé – Aéroport de Montréal | Dorval | Medical Clinics |
| Bishop Mercier | Westmount | Roofing |
| BJAC Aéronautique | Dorval | Aircraft Parts, Engines & Avionics |
| BJAC Services | Dorval | Aerospace |
| Black Limousine Montréal – Chauffeur privé & limousine de luxe | Dorval | Chauffeur Services |
| Blepharoplastie Montreal | Westmount | Tout Entreprises et services |
| Bombardier Aeorspace | Dorval | Aircraft Design & Manufacturers |
Publicité (Desktop) Publicité (Mobile) |
| BOMBARDIER AEROSPACE Centre de finition Intérieure | Dorval | Aerospace |
| BOMBARDIER AEROSPACE Siège Social Aéro & usine 3 | Dorval | Aerospace |
| Bookkeeping Mtl | Dorval | Accountants, Accounting Services |
| Boulangeries Weston (Québec) Inc | Longueuil | Baked Goods Wholesalers |
| Boulangeries Weston Québec Ltée | Longueuil | Agri-food |
| Boulangeries Weston Québec Ltée | Est | Agri-food |
| Boutique De Mariage Punta Chiara Inc | Dorval | Bridal Shops |
| Boutique Intermix Inc | Westmount | Boutiques |
| Boutique iStore | Dorval | Tout Informatique et internet |
| Boutique Made In Italy | Westmount | Boutiques |
