- Baby Stores, Ukiah - Baby Accessories & Clothes
- Bail Bonds, Ukiah
- Baker Equipment & Supplies, Ukiah - Donut Maker, etc
- Bakeries, Ukiah
- Banks, Ukiah
- Banners, Flags, Pennants, Decals, Posters & Signs, Ukiah
- Banquet Halls, Reception Halls & Party Facilities, Ukiah
- Baptist Churches, Ukiah
- Barbecue Restaurants, Ukiah
- Barber Shops, Ukiah
- Barbers, Ukiah
- Bars, Ukiah
- Bars & Grills, Ukiah
- Baseball & Softball Clubs, Ukiah
- Battery, Ukiah - Retail Batteries Stores
- Battery Storage, Ukiah
- Beads Decor, Ukiah
- Beauty Salons, Ukiah
- Bed & Breakfast, Ukiah
- Bedroom Furniture Stores, Ukiah - Master & Kids Bedroom Furniture Sets & Beds
- Beer & Ale - Wholesale, Ukiah
- Beer & Wine Stores, Ukiah
- Beer Taverns, Ukiah
- Beverage & Juice Bottlers Manufacturers, Ukiah
- Beverage Alcoholic, Ukiah
- Beverage Non-Alcoholic Manufacturers, Ukiah
- Beverage Stores, Ukiah
- Beverages, Ukiah
- Bible Church, Ukiah
- Bicycle Repair & Service, Ukiah - Bike Repair Shops
- Bicycle Shops, Ukiah - Road, Hybrid, Folding, BMX, Electric & Mountain Bikes Stores & Dealers
- Billing Services, Ukiah
- Bird Repellent, Barrier & Control, Ukiah
- Birth Control & Family Planning Clinics, Ukiah
- Bistros, Ukiah
- Blood Bank & Center, Ukiah
- Blueprint Service, Ukiah - Blueprinting Services
- Board Of Education, Ukiah
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- Boat Services, Ukiah
- Boating & Swimming Clubs, Ukiah
- Boiler & Furnace Contractors, Ukiah - Installation, Cleaning & Repair Services
- Boiler Repair & Cleaning, Ukiah
- Bonds, Ukiah
- Book Stores, Ukiah
- Bookkeeping Services Commercial, Ukiah
- Bookkeeping Systems & Services, Ukiah
- Books, Magazines & Newspapers Stores, Ukiah - Bookstores
- Bottling Manufacturing, Ukiah
- Boutique Items Manufacturers, Ukiah
- Boutiques & Boutique Items, Ukiah
- Bowling Centers, Ukiah
- Brake Service & Repair, Ukiah - Brake Pads
- Breakfast Restaurants, Ukiah
- Brew Pubs, Ukiah
- Brick Masonry & Bricklayer Contractors, Ukiah - Brick Mason - Install & Repair
- Bridge, Tunnel & Elevated Highway Construction, Ukiah - Highway, Street And Bridge Contractors
- Buddhist Churches, Ukiah
- Builders & Contractors, Ukiah
- Builders & Contractors - More, Ukiah
- Builders Hardware Stores, Ukiah
- Building & Home Inspection, Ukiah - Real Estate, Building, Land & House Inspection Service
- Building & Property Maintenance & Services, Ukiah
- Building Construction Consultants, Ukiah - Construction Management & Consulting
- Building Hardware & Materials, Ukiah
- Building Materials, Ukiah - Wholesale, Manufacturers, Dealers & Suppliers
- Building Materials & Supplies, Ukiah
- Building Site Preparation Contractors, Ukiah - Land Preparation & Land Clearing
- Burglar Alarm Systems, Ukiah
- Business & Professional Associations, Ukiah
- Business Development, Ukiah
- Business Insurance, Ukiah
- Business Legal Services, Ukiah
- Business Planning & Organizing, Ukiah
- Business Services, Ukiah
- Business, Vocational & Technical, Ukiah
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