- Baby & Childrens Gifts & Accessories, Madison
- Baby Stores, Madison - Baby Accessories & Clothes
- Bakeries, Madison
- Baking Supplies & Needs, Madison - Flavoring Extracts, Flour & More
- Bankruptcy Attorneys & Lawyers, Madison
- Bankruptcy Attorneys & Lawyers, Madison
- Bankruptcy Lawyers & Attorneys, Madison
- Banks, Madison
- Banquet Halls, Madison
- Banquet Halls, Reception Halls & Party Facilities, Madison
- Baptist Churches, Madison
- Barbecue Restaurants, Madison
- Barber Schools, Madison
- Barber Shops, Madison
- Barbers, Madison
- Bars, Madison
- Bars & Grills, Madison
- Baseball Cards & Sports Memorabilia, Madison
- Bathroom Remodeling, Madison - Bathroom Remodel & Planning Services
- Battery, Madison - Retail Batteries Stores
- Battery Storage, Madison
- Beauty Consultants, Madison
- Beauty Cosmetic & Salon Equipment & Supplies Manufacturers, Madison
- Beauty Salons, Madison
- Bed Parts & Frames Metal Wood & Other, Madison
- Bedding & Linens Stores, Madison - Bed Sheets, Quilts and Coverlets, Cushions, Pillows, Slipcovers & Bed & Table Linens
- Bedroom Furniture Stores, Madison - Master & Kids Bedroom Furniture Sets & Beds
- Beer Taverns, Madison
- Beverage Stores, Madison
- Bible Church, Madison
- Bicycle Shops, Madison - Road, Hybrid, Folding, BMX, Electric & Mountain Bikes Stores & Dealers
- Big & Tall Men's Clothing, Madison
- Billiard & Pool Parlors, Madison
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- Biological Research, Madison - Biological Labs
- Bird Repellent, Barrier & Control, Madison
- Blind Services & Facilities, Madison
- Blood Bank & Center, Madison
- Boat Services, Madison
- Boats & Yachts, Madison - Yachts, Sailboats & Boats for Sale
- Book Stores, Madison
- Books, Magazines & Newspapers Stores, Madison - Bookstores
- Boot Manufacturers, Madison
- Boots Retail, Madison
- Bowling Apparel & Accessories, Madison
- Bowling Centers, Madison
- Brake Service & Repair, Madison - Brake Pads
- Breakfast Restaurants, Madison
- Bricks, Blocks & Stone Products, Madison - Companies, Wholesale, Manufacturers & Suppliers
- Brooms & Brushes Manufacturers, Madison
- Builders & Contractors, Madison
- Builders & Contractors - More, Madison
- Building & Property Maintenance & Services, Madison
- Building Construction Consultants, Madison - Construction Management & Consulting
- Building Hardware & Materials, Madison
- Building Materials, Madison - Wholesale, Manufacturers, Dealers & Suppliers
- Building Materials & Supplies, Madison
- Burglar & Alarm Service, Madison - Monitoring Service
- Burglar Alarm Systems, Madison
- Bus Dealers, Madison
- Bus Rental & Charter Bus Service, Madison
- Business & Professional Associations, Madison
- Business & Trade Organizations, Madison
- Business Legal Services, Madison
- Business Management Consultants, Madison
- Business Services, Madison
- Business, Vocational & Technical, Madison
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