- Machine Shop & Tool Repair Service, Newfoundland
- Machinery, Supplies & Equipment - Business Production Related, Newfoundland
- Machinery, Supplies & Equipment - Business Supplies Related, Newfoundland
- Machinery, Supplies & Equipment - Construction & Contractor Related, Newfoundland
- Mail Delivery Service, Newfoundland
- Management Consultants & Services, Newfoundland
- Manicurists & Pedicurists, Newfoundland
- Manufacturing, Newfoundland
- Massage Therapists & Professional, Newfoundland
- Massage Therapy, Newfoundland
- Membership Sports & Recreation Clubs, Newfoundland
- Methodist Church, Newfoundland
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- Miscellaneous Business Services, Newfoundland
- Miscellaneous Industry, Newfoundland
- Miscellaneous Personal Services, Newfoundland
- Monuments, Tombstones, Markers & Memorials, Newfoundland
- Mortgage Bankers & Correspondents, Newfoundland
- Motor Vehicle, Newfoundland
- Motor Vehicle Rental & Leasing, Newfoundland
- Motorcycle Parts, Accessories & Dealers, Newfoundland
- Moving Supplies & Equipment Rental, Newfoundland
- Moving Truck Rental , Newfoundland
- Music, Newfoundland
- Musical Recording Services, Newfoundland
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