- Machinery, Supplies & Equipment - Construction & Contractor Related, West Haverstraw
- Manicurists & Pedicurists, West Haverstraw
- Manufacturing, West Haverstraw
- Marine Electronic Equipment, West Haverstraw
- Marine Supplies & Equipment, West Haverstraw - Boat Supplies
- Martial Arts & Self Defense Schools, West Haverstraw
- Masonry Contractors, West Haverstraw - Stone Mason, Brick Mason - Install & Repair
- Masonry Materials & Supplies, West Haverstraw
- Meat Market, Wholesale & Products, West Haverstraw
- Membership Sports & Recreation Clubs, West Haverstraw
- Mexican Restaurants, West Haverstraw
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- Middle Eastern Restaurants, West Haverstraw
- Miscellaneous Government, West Haverstraw
- Miscellaneous Professional, West Haverstraw
- Mobile Home Contractors, West Haverstraw
- Mobile Home Improvements & Repairs, West Haverstraw
- Motor Vehicle, West Haverstraw
- Motor Vehicle Rental & Leasing, West Haverstraw
- Moving & Storage Supplies & Equipment, West Haverstraw
- Moving Companies, West Haverstraw
- Moving Truck Rental , West Haverstraw
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