- Machine Shop, Semmes
- Machinery Movers & Erectors, Semmes
- Machinery, Supplies & Equipment - Business Production Related, Semmes
- Machinery, Supplies & Equipment - Business Supplies Related, Semmes
- Machinery, Supplies & Equipment - Construction & Contractor Related, Semmes
- Mailing, Delivery & Courier Service, Semmes
- Manicurists & Pedicurists, Semmes
- Manufacturing, Semmes
- Manufacturing Products, Semmes
- Martial Arts & Self Defense Schools, Semmes
- Masonry Materials & Supplies, Semmes
- Meat Market, Wholesale & Products, Semmes
- Membership Sports & Recreation Clubs, Semmes
- Metal Repair Service & Blacksmith, Semmes - Iron Works
- Metal Roofs, Semmes
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- Methodist Church, Semmes
- Mexican Restaurants, Semmes
- Millwork Contractors, Semmes
- Mini & Self Storage, Semmes
- Miscellaneous Government, Semmes
- Miscellaneous Personal Services, Semmes
- Miscellaneous Professional, Semmes
- Mortgage Bankers & Correspondents, Semmes
- Motor Vehicle, Semmes
- Motor Vehicle Rental & Leasing, Semmes
- Motorcycle & Motor Scooters Dealers, Repair & Service, Semmes
- Motorcycle Repair & Service, Semmes
- Moving Truck Rental , Semmes
- Music, Semmes
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