| Maitre Claude Desrochers | Business Lawyers | — |
| Maitre Myléne Petitpas | Business Lawyers | facebook.com |
| Manon Béliveau | Bankruptcy Lawyers | — |
| Manon Dussault, Masso-kinésithérapeute | Massage Therapy | manondussault.wixsite.com |
| Marc Morin | Bankruptcy Lawyers | — |
| Marché de Noël et des traditions de... | Tout Événements spéciaux | marchedenoel.metierstraditions.com |
| Marché Express - Convenience Store | Beer & Ale | marcheexpress.com |
| Marché Express - Dépanneur | Beer & Ale | marcheexpress.com |
| Marché Philatélique de Montréal | Tout Commerces au détail | mpmtl.com |
| Marie Lahoud | Beauty & Fitness, Hairdressers & Beauty Salons | — |
| Marie-Julie Rivest Massothérapeute | Massage Therapy | — |
| Marine Daniel Masson | Boat Dealers & Brokers | marinedanielmasson.com |
| Marius Couture | Couture, COUTURE | — |
| Marnie4Fitness | Fitness Gyms | facebook.com |
| Marquage Antivol Sherlock | Answering Machines & Equipment | — |
| Marteau X Pro | Bathroom Renovations | marteauxpro.com |
| Martech Signalisation Inc. | Tout Entreprises et services | martech.qc.ca |
| Martel Daniel Dr | Dentists | — |
| Martimbeau Stéphanie Dr | Dentists | — |
| Martin Turcotte - Les Emballages Florisec | Bakery Equipment, Bakery Supplies | florisec.com |
| Martine Favre Art | Artists | facebook.com |
| Massage de Réflexologie Intégrale | Massage Therapy | — |
| Massage Santé Maintien | Beauty & Health Spas | massagesantemaintien.com |
| Massage Santé Maintien | Massage Therapy | — |
| Massage The Art Of Touch | Massage Therapy | — |
| Massage Thérapeutique L'Escale | Massage Therapy | — |
| MassaYoga | Massage Therapy | — |
| Massivo | Furniture Stores | facebook.com |
| massobienetre.ca | Massage Therapy | massobienetre.ca |
| Massotherapie Andree Royer | Massage Therapy | — |
| Massotherapist David Massage | Massage Therapy | — |
| Massothérapie Annik Montpetit | Massage Therapy | facebook.com |
| Massothérapie Chantal | Massage Therapy | facebook.com |
| Massothérapie Claude Lavoie | Massage Therapy | — |
| Massothérapie Clinique Beaulieu | Massage Therapy | — |
| Massothérapie Fasciathérapie Annie Allaire | Massage Therapy | massofascia.com |
| Massothérapie Gabriel Beaulieu | Massage Therapy | facebook.com |
| Massothérapie Helene Brochu | Massage Therapy | — |
| Massothérapie Paquet Tanya | Massage Therapy | — |
| Massothérapie Véronique Lachapelle | Health and Beauty | facebook.com |
| Massothérapie à votre domicile | Massage Therapy | — |
| Massy Forget Langlois relations pub... | Tout Entreprises et services | mflrp.ca |
| Mat-Comp | Tout Entreprises et services | mat-comp.ca |
| Maurice Favreau Gagnon | Answering Machines & Equipment | — |
| Maxi Vent 2003 Inc | Air Conditioning Contractors | maxivent.ca |
| May Communications | Communications & Public Relations Consultants | — |
| MC Eyelashz | Beauty & Fitness, Hairdressers & Beauty Salons | facebook.com |
| MCE Conseils | Tout Entreprises et services | mceconseils.com |
| McMahon Distributeur Pharmaceutique Inc | Pharmacy | — |
| mdf commerce | Tout Informatique et internet | mdfcommerce.com |
