- Bakeries, Southampton
- Banks, Southampton
- Baptist Churches, Southampton
- Barber Shops, Southampton
- Bars, Southampton
- Bars & Grills, Southampton
- Beauty Salons, Southampton
- Bed & Breakfast, Southampton
- Bedroom Furniture Stores, Southampton - Master & Kids Bedroom Furniture Sets & Beds
- Beer & Wine Stores, Southampton
- Beer Taverns, Southampton
- Beverage Stores, Southampton
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- Bicycle Shops, Southampton - Road, Hybrid, Folding, BMX, Electric & Mountain Bikes Stores & Dealers
- Builders & Contractors, Southampton
- Builders & Contractors - More, Southampton
- Building & Home Inspection, Southampton - Real Estate, Building, Land & House Inspection Service
- Building & Property Maintenance & Services, Southampton
- Building Materials & Supplies, Southampton
- Business & Professional Associations, Southampton
- Business Legal Services, Southampton
- Business Services, Southampton
- Business, Vocational & Technical, Southampton
- Butcher Shops, Southampton
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