- Bakeries, Dayton
- Bank Supplies & Equipment, Dayton
- Banks, Dayton
- Baptist Churches, Dayton
- Bars & Grills, Dayton
- Basement Waterproofing - Waterproofing Contractors, Dayton - Foundation & Concrete Waterproofing
- Battery, Dayton - Retail Batteries Stores
- Battery Storage, Dayton
- Beauty Salons, Dayton
- Bedding & Linens Stores, Dayton - Bed Sheets, Quilts and Coverlets, Cushions, Pillows, Slipcovers & Bed & Table Linens
- Bistros, Dayton
- Blouses, Shirts & Sweater Manufacturers, Dayton
- Boat Services, Dayton
- Boat Storage , Dayton - Equipment & Services
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- Bookkeeping Services Commercial, Dayton
- Bookkeeping Systems & Services, Dayton
- Bottled Gas, Lp Gas & Propane Dealers, Dayton
- Breakfast Restaurants, Dayton
- Brick Masonry & Bricklayer Contractors, Dayton - Brick Mason - Install & Repair
- Builders & Contractors, Dayton
- Builders & Contractors - More, Dayton
- Building & Home Inspection, Dayton - Real Estate, Building, Land & House Inspection Service
- Building Hardware & Materials, Dayton
- Building Materials & Supplies, Dayton
- Business & Professional Associations, Dayton
- Business Legal Services, Dayton
- Business Management Consultants, Dayton
- Business Services, Dayton
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