- Machine Shop Supplies
- Machine Shops
- Machinery Repair
- Manufactured Homes
- Marijuana Retail
- Massage Therapists
- Medical Laboratories
- Mediterranean Restaurants
- Mexican Restaurants
- Middle Eastern Restaurants
- Minerals
- Mobile Home Dealers
- Mobile Home Parks
- Modular Construction
- Motels
- Motorcycles
- Moving and Storage
- Mufflers
- Municipal Government
- Musical Instrument Stores
- Mutual Funds