| Autos Internationales Lachine | Lachine | Tout Commerces au détail |
| Avenant SST Inc | Lachine | Health Services |
| AVIATION MBBH Inc. | Dorval | Aerospace |
| Avis | Dorval | Tout Commerces au détail |
| Aviva Solutions Inc. | Dorval | Tout Informatique et internet |
| Azad Fine Chemicals | Dorval | Chemicals |
| Aéro-Mag 2000 Inc | Lachine | Aircraft Maintenance, Service & Storage |
| 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 |
Publicité (Desktop) Publicité (Mobile) |
| Aéroports Internationaux de Montréal-Trudeau et Montréal-Mirabel | Dorval | Airports |
| b At order | Dorval | at |
| B-Attitude | Montréal | Aromatherapy |
| Babysitting & Cleaning services | Dorval | Babysitting Services |
| Bain Depot | Dorval | Bathroom Accessories |
| Baked2go | Dorval | Tout Commerces au détail |
| Bar Le Griffon | Lachine | Brasseries |
| Bar Le Griffon | Lachine | Brasseries |
| Bardeco | Lachine | Tout Bars et restaurants |
| Bariatrix Nutrition | Lachine | Tout Entreprises et services |
Publicité (Desktop) Publicité (Mobile) |
| Barrette & Associés | Lachine | 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 |
| Belvedere Bowling Inc | Lachine | Bowling |
| Bergy Baseball & Golf | Dorval | Baseball Clubs & Lessons |
| BHM Truck Trailer Repair Garage | Dorval | Auto Repair Garages, Automobiles, Not Profit, Car Repair |
| Bibliothèque | Dorval | Not Profit, library |
Publicité (Desktop) Publicité (Mobile) |
| Bicyclettes Rossi | Lachine | Tout Commerces au détail |
| Bicyclettes Rossi | Lachine | Clothing Manufacturers & Wholesalers |
| 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) |
| Bio S & T Inc. | Lachine | Life Sciences and Health Technologies (LSHT), Tout Entreprises et services |
| Bionetix | Dorval | Biomedical Products |
| Biron – Centre de santé – Aéroport de Montréal | Dorval | Medical Clinics |
| BIXI Montreal | Lachine | Tout Entreprises et services |
| BJAC Aéronautique | Dorval | Aircraft Parts, Engines & Avionics |
Publicité (Desktop) Publicité (Mobile) |
| BJAC Services | Dorval | Aerospace |
| Black Limousine Montréal – Chauffeur privé & limousine de luxe | Dorval | Chauffeur Services |
| Bombardier Aeorspace | Dorval | Aircraft Design & Manufacturers |
| BOMBARDIER AEROSPACE Centre de finition Intérieure | Dorval | Aerospace |
| BOMBARDIER AEROSPACE Siège Social Aéro & usine 3 | Dorval | Aerospace |
| Bon bain | Lachine | Bathroom Renovations |
| Bookkeeping Mtl | Dorval | Accountants, Accounting Services |
| Borenstein Plumbing & Heating Inc | Lachine | Plumbing |
| Boulangerie N D G | Lachine | Bakeries |
| Boulart Inc | Lachine | Baked Goods Wholesalers |
