| Idea Folio Design | Westmount | Commercial Artists |
| Iera Deborah Dr | Westmount | Dentists |
| Illusion Concept | Westmount | Beauty & Fitness, Hairdressers & Beauty Salons |
| Incendo | Westmount | Tout Entreprises et services |
| Industries Dorel Inc. | Westmount | Tout Entreprises et services |
| Informatica Software Limited | Westmount | Information Technologies (IT) |
| Inro | Québec | Information Technologies (IT) |
| Institut Canadien de Chirurgie Esth... | Westmount | Tout Entreprises et services |
| Intellogo | Québec | Information Technologies (IT) |
| Isaif Martin | Westmount | Business & Trade Organizations |
Publicité (Desktop) Publicité (Mobile) |
| Ivision Group | Westmount | Medical Clinics |
| Janin Atlas Inc. | Westmount | Tout Entreprises et services |
| Jean-Pierre Charest, services-conse... | Westmount | Tout Entreprises et services |
| Jenny Volovnik Make Up Artist | Westmount | Artists |
| Joaillier Lou Goldberg | Westmount | Tout Commerces au détail |
| K.I.D.S. | Westmount | Tout Enseignement et savoir |
| Karabagh Oriental Rugs Inc | Westmount | Carpet & Rug Cleaning |
| Kathleen McMeekin Acupuncture | Westmount | Acupuncturists |
| Kd Burrows | Westmount | kd |
| Laframboise SENC | Westmount | Business Lawyers |
Publicité (Desktop) Publicité (Mobile) |
| Lapidarius | Westmount | Tout Commerces au détail |
| Laser Dermalab | Westmount | Beauty & Fitness, Hairdressers & Beauty Salons |
| LaserEtq | Westmount | Beauty Salon Equipment & Supplies |
| Lash-Cutie Boutique | Westmount | Beauty & Fitness, Cleaning Services, Cleaning Service |
| Lave Auto Chef Net | Westmount | Car Washes |
| Le Boudoir | Westmount | Beauty & Fitness, Hairdressers & Beauty Salons |
| Le Café-Crème | Westmount | Coffee Machines & Roasting Equipment |
| Leonard Levy | Westmount | Health Services |
| Les 5 Saisons | Westmount | Bakery Equipment, Bakery Supplies, Tout Commerces au détail |
| Les Agences de Collection Associés... | Westmount | Tout Entreprises et services |
Publicité (Desktop) Publicité (Mobile) |
| Les Armoires Prime Kitchens Inc | Westmount | Tout Commerces au détail, Kitchen Cabinets |
| Les normes canadiennes de la public... | Westmount | Tout Entreprises et services |
| Les Services Psychologiques Medipsy | Westmount | Tout Entreprises et services |
| Les Systèmes Digitaux ORANGE Inc. | Westmount | Tout Informatique et internet |
| Librairie Greene | Westmount | Book Stores |
| LISA SIM Makeup Artist | Westmount | Artists |
| Little Bear | Westmount | Tout Commerces au détail |
| Louise Woodfine | Westmount | Business Lawyers |
| Love Your Linens | Westmount | Bedding & Linens |
| Lysy Paul G Dr | Westmount | Walk-in Clinics |
Publicité (Desktop) Publicité (Mobile) |
| M Couture | Westmount | Couture, COUTURE |
| MANOLAKOS, Maria, LL.L, D.D.N. | Westmount | Professionals |
| Manufacturier Stylekraft International (1994) Inc | Westmount | Clock Repair |
| Marianopolis College | Westmount | Tout Enseignement et savoir |
| Mark & Lachance Inc | Westmount | Audiologists |
| Marteinson Afshari | Westmount | Chartered Professional Accountants (CPA) |
| Martin Swiss Cycles | Westmount | Bicycle Stores |
| Mateo | Westmount | Roofing |
| MDS Power | Westmount | Tout Commerces au détail |
| Metro Westmount | Westmount | Not Profit, Grocery Stores |
