- Machine Shop & Tool Repair Service, Savannah
- Machinery, Supplies & Equipment - Business Production Related, Savannah
- Machinery, Supplies & Equipment - Business Supplies Related, Savannah
- Machinery, Supplies & Equipment - Construction & Contractor Related, Savannah
- Mailing, Delivery & Courier Service, Savannah
- Manufacturing, Savannah
- Masonry Materials & Supplies, Savannah
- Medical Supplies & Equipment, Savannah
- Meeting & Event Planning Services, Savannah - Conference Consultants
- Men's & Boys Clothing & Accessories Stores, Savannah
- Mens & Boys Jeans & Western Wear Stores, Savannah
- Metal Repair Service & Blacksmith, Savannah - Iron Works
- Methodist Church, Savannah
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- Mexican Restaurants, Savannah
- Mini & Self Storage, Savannah
- Miscellaneous Government, Savannah
- Miscellaneous Personal Services, Savannah
- Miscellaneous Photographers, Savannah
- Miscellaneous Professional, Savannah
- Money Transfer Service, Savannah
- Monuments, Tombstones, Markers & Memorials, Savannah
- Mortgage Bankers & Correspondents, Savannah
- Motor Vehicle, Savannah
- Multimedia Publishers, Savannah - Multimedia Services & Systems
- Museums, Savannah
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