- Bail Bonds, Clarksville
- Bakeries, Clarksville
- Balloon Arrangements, Clarksville
- Banks, Clarksville
- Baptist Churches, Clarksville
- Barber Shops, Clarksville
- Barbers, Clarksville
- Bars & Grills, Clarksville
- Bearings, Clarksville
- Beauty Salons, Clarksville
- Bed & Breakfast, Clarksville
- Bible Church, Clarksville
- Bonds, Clarksville
- Book Stores, Clarksville
- Book Stores - Christian Books, Clarksville
- Bookkeeping Services Licensed, Clarksville
- Bookkeeping Systems & Services, Clarksville
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- Bowling Centers, Clarksville
- Bowling Instruction, Clarksville
- Brake Service & Repair, Clarksville - Brake Pads
- Breakfast Restaurants, Clarksville
- Brick Clay Common Face, Clarksville
- Bricks, Blocks & Stone Products, Clarksville - Companies, Wholesale, Manufacturers & Suppliers
- Builders & Contractors, Clarksville
- Builders & Contractors - More, Clarksville
- Building Construction Consultants, Clarksville - Construction Management & Consulting
- Building Hardware & Materials, Clarksville
- Building Materials, Clarksville - Wholesale, Manufacturers, Dealers & Suppliers
- Building Materials & Supplies, Clarksville
- Bus Lines, Clarksville - Bus Transportation
- Business & Professional Associations, Clarksville
- Business Legal Services, Clarksville
- Business Services, Clarksville
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