- Machinery, Supplies & Equipment - Business Supplies Related, Pictou
- Machinery, Supplies & Equipment - Construction & Contractor Related, Pictou
- Manufacturing, Pictou
- Manufacturing Products, Pictou
- Marinas & Marina Services, Pictou
- Marine Supplies & Equipment, Pictou - Boat Supplies
- Massage Therapists & Professional, Pictou
- Massage Therapy, Pictou
- Medical Supplies & Equipment, Pictou
- Membership Sports & Recreation Clubs, Pictou
- Mennonite Church, Pictou
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- Metal Repair Service & Blacksmith, Pictou - Iron Works
- Miscellaneous Agriculture, Pictou
- Miscellaneous Government, Pictou
- Miscellaneous Personal Services, Pictou
- Miscellaneous Professional, Pictou
- Moldings Materials, Pictou
- Motor Vehicle, Pictou
- Motor Vehicle Rental & Leasing, Pictou
- Moving Truck Rental , Pictou
- Muffler Shop & Exhaust Systems, Pictou
- Museums, Pictou
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