- Machine Shops
- Magicians
- Maid Service
- Major Appliance Stores
- Makeup Artists
- Management Consultants
- Management Training
- Mantels
- Manufactured Homes
- Maple Syrup
- Maps
- Marble
- Marijuana Retail
- Marinas
- Marketing Agencies
- Marketing Research
- Martial Arts Schools
- Masons
- Massage Therapists
- Mats
- Mattresses
- Mechanical Contractors
- Mediation Service
- Medical Centres
- Medical Clinics
- Medical Laboratories
- Medical Supplies
- Memorabilia
- Men S Clothing Stores
- Mental Health Service
- Metal Doors
- Metals
- Mexican Restaurants
- Middle Eastern Restaurants
- Millwork
- Mirrors
- Missions
- Mobile Home Transporters
- Modelling Agencies
- Modelling Courses
- Money Transfers
- Mortgage Brokers
- Mortgages
- Motels
- Motorcycles
- Mould Removal
- Moving and Storage
- Mufflers
- Multimedia
- Municipal Government
- Museums
- Music Lessons
- Music Stores
- Musical Instrument Stores
- Musicians
- Mutual Funds