- Bagels, Islip
- Bakeries, Islip
- Banks, Islip
- Barber Shops, Islip
- Barbers, Islip
- Bars & Grills, Islip
- Basement Waterproofing - Waterproofing Contractors, Islip - Foundation & Concrete Waterproofing
- Bathroom Remodeling, Islip - Bathroom Remodel & Planning Services
- Beauty Salons, Islip
- Beer & Wine Stores, Islip
- Beverage Stores, Islip
- Billiard Supplies & Equipment, Islip - Pool Table
- Boat Covers, Tops & Upholstery, Islip
- Boat Services, Islip
- Boats & Yachts, Islip - Yachts, Sailboats & Boats for Sale
- Book Stores, Islip
|
- Bookkeeping Systems & Services, Islip
- Botanical & Zoological Gardens, Islip
- Botanical Gardens, Islip
- Bowling Centers, Islip
- Breakfast Restaurants, Islip
- Builders & Contractors, Islip
- Builders & Contractors - More, Islip
- Building Construction Consultants, Islip - Construction Management & Consulting
- Building Materials, Islip - Wholesale, Manufacturers, Dealers & Suppliers
- Building Materials & Supplies, Islip
- Burglar Alarm Systems, Islip
- Business Insurance, Islip
- Business Legal Services, Islip
- Business Management Consultants, Islip
- Business Services, Islip
- Business, Vocational & Technical, Islip
|