| Maxi Lab Inc | Shopping Mall | facebook.com |
| Maxi Vent 2003 Inc | Air Conditioning Systems & Parts | facebook.com |
| Maxigrip Store | Car Customizing & Accessories | facebook.com |
| Maître Electricien Ememcor Inc | Electricians | ememcor.com |
| Mc2 l'Entrainement | Fitness Gyms | facebook.com |
| McCann Carrier | Accountants | — |
| MDGP Entrepreneur Général | Home Improvement | mdgp.ca |
| Mecaer America Inc | Aircraft Parts, Engines & Avionics | — |
| MECAER AMÉRICA INC. | Aerospace | mecaer.ca |
| Mech Can | Cans | mechcan.ca |
| Mechanick Pièces D'auto | Auto Part Manufacturers & Wholesalers | mechanick.ca |
| MED PRODUCTIONS | Disc-Jockeys, Entertainment | — |
| Media Express Services | Communications & Public Relations Consultants | facebook.com |
| Medvue Imagerie Médicale Laval Carrefour | Medical Clinics | medvue.ca |
| Medvue Imagerie Médicale Laval Concorde | Medical Clinics | medvue.ca |
| Megalab Inc | Chemicals | megalab.ca |
| Megalogo | Auto Body Shop | — |
| Mehboob Ur Rehman | ur | — |
| Meilleur Remplissage D'Encre Inc | Computer Accessories & Supplies | — |
| Melissa Masella | Appraisers | — |
| Menager.Ca | Shopping Mall | — |
| MEP Technologies Inc. | Tout Entreprises et services | meptec.com |
| Mercedes-Benz Laval | Tout Commerces au détail | mercedes-benz-laval.ca |
| Messina Ronny | Computer Accessories & Supplies | erlenesnails.goldbook.ca |
| Metra Aluminium | Tout Entreprises et services | metra.eu |
| Meubles Bigras | Furniture Stores | meublesbigras.com |
| Meubles Création Julie-Pierre Inc | Furniture Stores | facebook.com |
| Meubles De Successions | Furniture Stores | facebook.com |
| Meubles Des Patriotes | Tout Commerces au détail, Furniture Stores | meublesdespatriotes.com |
| Meubles Et Décoration Smart Homestyle | Furniture Stores | facebook.com |
| Meubles Les Petits Mousses Inc | Baby Furniture Stores | petitsmousses.com |
| Meubles Loren Laval | Furniture Stores | — |
| Meubles Reaidy | Furniture Stores | facebook.com |
| Micheals Arts And Craft | Arts & Crafts Materials & Supplies | canada.michaels.com |
| Michel Couture | Couture, COUTURE | — |
| Michel Gohier Ltee | Bathroom Accessories | mgohier.com |
| Michel Tremblay | Auto Body Shop | — |
| Michelle Lafontaine Designer | Architectural Technologists | facebook.com |
| Micone Entrepreneur Electricien (1985) Inc | Electricians | — |
| Micro Bus Electronique | Bus, Coach & Minibus Repair & Service | micro-bus.ca |
| Microbiochem | Life Sciences and Health Technologies (LSHT) | microbiochem.ca |
| Microblading And Permanent Makeup Suzi Beylouni/Makeup Artist | Artists | facebook.com |
| MICRON INC. (LES PRODUITS AUTOMATIQUES) | Aerospace | — |
| Microtrol Inc | Automation Systems & Equipment | facebook.com |
| Mida beauté | Beauty Salon Equipment & Supplies | midabeaute.ca |
| Midi40 | Associations | midi40.com |
| MIKE’S METAL WORKS | Construction / Renovation | — |
| Milad Sater | Chauffeur Services | — |
| Milie Dajenais technicienne En Pose D'Ongles | Beauty & Fitness, Hairdressers & Beauty Salons | — |
| Mille Et Une Bille 2006 Inc | Beads, Beads & Pearls | — |
