- Machine Shop & Tool Repair Service, Martensville
- Machinery, Supplies & Equipment - Business Production Related, Martensville
- Machinery, Supplies & Equipment - Construction & Contractor Related, Martensville
- Management Consultants & Services, Martensville
- Manufacturing, Martensville
- Manufacturing Products, Martensville
- Masonry Contractors, Martensville - Stone Mason, Brick Mason - Install & Repair
- Masonry Materials & Supplies, Martensville
- Massage Therapy, Martensville
- Material Handling & Heavy Machinery & Equipment, Martensville
- Mechanical Contractors, Martensville - Install, Service & Repair
- Mennonite Church, Martensville
- Metal Coating & Allied Services, Martensville
- Metal Cutting Services, Martensville
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- Mini & Self Storage, Martensville
- Mining, Martensville
- Mining Contractors, Martensville - Mining Companies, Contractors & Brokers
- Mining, Crude-Oil Production, Martensville - Mining Companies
- Mirrors, Martensville - Custom, Framed, Bathroom, Vanity & Wall Mirrors
- Miscellaneous Agriculture, Martensville
- Miscellaneous Government, Martensville
- Miscellaneous Industry, Martensville
- Miscellaneous Personal Services, Martensville
- Motor Vehicle, Martensville
- Motor Vehicle Rental & Leasing, Martensville
- Motorcycle Parts, Accessories & Dealers, Martensville
- Moving Truck Rental , Martensville
- Multi Service Charitable & Non-Profit Organizations, Martensville
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