- Machine Shop & Tool Repair Service, Hudson
- Management Consultants & Services, Hudson
- Manicurists & Pedicurists, Hudson
- Manifold Business Forms Manufacturers, Hudson
- Manufactured & Mobile Home Movers & Transporting, Hudson
- Manufacturing, Hudson
- Manufacturing Equipment & Supplies, Hudson
- Manufacturing Products, Hudson
- Marine Supplies & Equipment, Hudson - Boat Supplies
- Medical Equipment, Supplies, Devices & Instruments - Repair & Service, Hudson
- Mental Health Clinics, Hudson - Treatment Centers
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- Mental Retardation & Developmentally Disabled Services, Hudson
- Methodist Church, Hudson
- Miscellaneous Business Services, Hudson
- Miscellaneous Government, Hudson
- Miscellaneous Professional, Hudson
- Motor Vehicle, Hudson
- Motor Vehicle Rental & Leasing, Hudson
- Moving Companies, Hudson
- Moving Truck Rental , Hudson
- Muffler Shop & Exhaust Systems, Hudson
- Music, Hudson
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