- Bakeries, Blacksburg
- Banks, Blacksburg
- Baptist Churches, Blacksburg
- Bars & Grills, Blacksburg
- Beauty Salons, Blacksburg
- Beverage Stores, Blacksburg
- Boat Services, Blacksburg
- Books, Magazines & Newspapers Stores, Blacksburg - Bookstores
- Breakfast Restaurants, Blacksburg
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- Bridge, Tunnel & Elevated Highway Contractors, Blacksburg
- Builders & Contractors, Blacksburg
- Building Construction Consultants, Blacksburg - Construction Management & Consulting
- Building Design & Construction Consultants, Blacksburg
- Building Hardware & Materials, Blacksburg
- Building Materials & Supplies, Blacksburg
- Burglar Alarm Systems, Blacksburg
- Business Legal Services, Blacksburg
- Business Services, Blacksburg
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