- Machine Shops
- Machine Tool Repairing
- Machine Tools
- Machinery Movers
- Machinery Repair
- Magazines
- Magicians
- Maid Service
- Major Appliance Stores
- Makeup Artists
- Management Consultants
- Management Training
- Manicures and Pedicures
- Mantels
- Maple Syrup
- Maple Syrup Equipment
- Marketing Agencies
- Martial Arts Schools
- Masons
- Massage Parlours
- Massage Therapists
- Massage Therapy Schools
- Material Handling Equipment
- Mats
- Mattresses
- Mechanical Belting
- Mechanical Contractors
- Mediation Service
- Medical Centres
- Medical Clinics
- Medical Supplies
- Meditation
- Memorabilia
- Men S Clothing Stores
- Mental Health Service
- Merchandise Warehouses
- Metal Buildings
- Metal Recycling
- Metal Shearing
- Metal Stamping
- Metals
- Mexican Restaurants
- Microbreweries
- Millwrights
- Mirrors
- Missions
- Modelling Agencies
- Mortgage Brokers
- Mortgages
- Motels
- Motorcycle Parts
- Motorcycles
- Mouldings
- Moving and Storage
- Mufflers
- Multimedia
- Municipal Government
- Murals
- Museums
- Music Lessons
- Music Stores
- Musicians
- Mutual Funds