- Machine Shop, Caruthersville
- Machinery, Supplies & Equipment - Business Production Related, Caruthersville
- Machinery, Supplies & Equipment - Construction & Contractor Related, Caruthersville
- Manicurists & Pedicurists, Caruthersville
- Manufacturing, Caruthersville
- Manufacturing Products, Caruthersville
- Marine Contractors & Designers, Caruthersville
- Marriage & Family Counselors, Caruthersville
- Masonry Materials & Supplies, Caruthersville
- Men's Clothing Stores, Caruthersville - Clothes & Accessories
- Methodist Church, Caruthersville
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- Middle Eastern Restaurants, Caruthersville
- Ministers, Caruthersville
- Miscellaneous Agriculture, Caruthersville
- Miscellaneous Government, Caruthersville
- Miscellaneous Personal Services, Caruthersville
- Modular & Mobile Homes For Sale, Caruthersville - Manufactured Homes Sale & Service
- Motor Vehicle, Caruthersville
- Motor Vehicle Rental & Leasing, Caruthersville
- Motorcycle Parts, Accessories & Dealers, Caruthersville
- Moving Truck Rental , Caruthersville
- Music, Caruthersville
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