- Bakeries, Welland
- Ballrooms, Welland
- Bankruptcy Attorneys & Lawyers, Welland
- Bankruptcy Attorneys & Lawyers, Welland
- Bankruptcy Lawyers & Attorneys, Welland
- Bankruptcy Services, Welland
- Banks, Welland
- Banquet Halls, Welland
- Baptist Churches, Welland
- Barber Shops, Welland
- Barbers, Welland
- Bars, Welland
- Bars & Grills, Welland
- Basement Waterproofing - Waterproofing Contractors, Welland - Foundation & Concrete Waterproofing
- Bathroom Remodeling, Welland - Bathroom Remodel & Planning Services
- Bearings, Welland
- Beauty Consultants, Welland
- Beauty Salons, Welland
- Bedroom Furniture Stores, Welland - Master & Kids Bedroom Furniture Sets & Beds
- Beef Restaurants, Welland
- Beer & Wine Stores, Welland
- Beer Taverns, Welland
- Belt Mechanical Supplies, Welland
- Beverage Stores, Welland
- Bible Church, Welland
- Bicycle & Motorcycle Services, Welland
- Bicycle Shops, Welland - Road, Hybrid, Folding, BMX, Electric & Mountain Bikes Stores & Dealers
- Bingo Halls, Supplies & Equipment, Welland
- Birth Control & Family Planning Clinics, Welland
- Board Of Education, Welland
- Boat Covers, Tops & Upholstery, Welland
- Boats & Yachts, Welland - Yachts, Sailboats & Boats for Sale
- Bonds, Welland
- Book Publishers, Welland - Book Printing & Publishing
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- Book Stores, Welland
- Bookkeeping Services Licensed, Welland
- Bookkeeping Systems & Services, Welland
- Books, Magazines & Newspapers Stores, Welland - Bookstores
- Bottles & Jars, Welland
- Boutiques & Boutique Items, Welland
- Bowling Centers, Welland
- Brake Service & Repair, Welland - Brake Pads
- Breakfast Restaurants, Welland
- Breast Screening Services, Welland
- Brick Masonry & Bricklayer Contractors, Welland - Brick Mason - Install & Repair
- Bricks, Blocks & Stone Products, Welland - Companies, Wholesale, Manufacturers & Suppliers
- Buffet Restaurants, Welland
- Builders & Contractors, Welland
- Builders & Contractors - More, Welland
- Builders Hardware Stores, Welland
- Building & Home Inspection, Welland - Real Estate, Building, Land & House Inspection Service
- Building Construction Consultants, Welland - Construction Management & Consulting
- Building Hardware & Materials, Welland
- Building Materials, Welland - Wholesale, Manufacturers, Dealers & Suppliers
- Building Materials & Supplies, Welland
- Bulk Food Stores, Welland
- Burglar Alarm Systems, Welland
- Bus Lines, Welland - Bus Transportation
- Bus Rental & Charter Bus Service, Welland
- Business & Professional Associations, Welland
- Business & Trade Organizations, Welland
- Business Insurance, Welland
- Business Legal Services, Welland
- Business Management Consultants, Welland
- Business Services, Welland
- Business, Vocational & Technical, Welland
- Butcher Shops, Welland
- Butchers & Meat Markets - Manufacturers, Welland
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