- Machine Shop & Tool Repair Service, Norton
- Machinery, Supplies & Equipment - Business Production Related, Norton
- Machinery, Supplies & Equipment - Business Supplies Related, Norton
- Machinery, Supplies & Equipment - Construction & Contractor Related, Norton
- Mail Delivery Service, Norton
- Major Appliances, Norton - Household & Kitchen
- Manicurists & Pedicurists, Norton
- Manufacturing, Norton
- Manufacturing Products, Norton
- Marriage & Family Counselors, Norton
- Masonry Materials & Supplies, Norton
- Meat Market, Wholesale & Products, Norton
- Medical Groups & Clinics, Norton - Medical & Health Centers
- Membership Sports & Recreation Clubs, Norton
- Mental Health Clinics, Norton - Treatment Centers
- Mental Health Specialists, Norton - Psychologist, Psychiatrist, Psychotherapist, etc
- Merchandise Sales Events, Norton
- Methodist Church, Norton
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- Mexican Restaurants, Norton
- Miscellaneous Agriculture, Norton
- Miscellaneous Government, Norton
- Miscellaneous Industry, Norton
- Miscellaneous Personal Services, Norton
- Miscellaneous Professional, Norton
- Monuments, Tombstones, Markers & Memorials, Norton
- Mortgage Bankers & Correspondents, Norton
- Motor Vehicle, Norton
- Motor Vehicle Rental & Leasing, Norton
- Motorcycle & Motor Scooters Dealers, Repair & Service, Norton
- Motorcycle Parts, Accessories & Dealers, Norton
- Motorcycle Repair & Service, Norton
- Movie Theaters, Norton
- Moving Supplies & Equipment Rental, Norton
- Moving Truck Rental , Norton
- Museums, Norton
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