- Business-to-Business (B2B) Research
- Baby Portraits
- Background Checking Services
- Background Checks and Investigations
- Backhoes Rental
- Backpacking Campsites
- Backpacking Services
- Bakery Product Manufacturing
- Bakery Products Manufacturing
- Bank Reconciliation and Account Reconciliation Services
- Banking System Liquidity Management
- Bankruptcy and restructuring law advice
- Bars
- Bathroom Accessories Agents
- Battery Replacement for Watches
- Bed & Breakfast Inns
- Bed & Breakfasts
- Beds manufacture
- Beef Production
- Beekeeping
- Behavioral Health Services for Persons with Mental Retardation andMental Disabilities
- Betting and Wagering Services
- Bicycle/Motorcycle/ATV Repair
- Bicycle Rental
- Bicycle Wheel Manufacturing
- Big Data Analysis
- Bill payment processing services
- Binding Services
- Biochemistry
- Biological research
- Biomedical and Biomechanical Technology Services
- Biotech Companies
- Bitumen Processing and Packaging
- Blasting and Drilling in Mining Activities
- Blending and packaging of essential oils
- Blending/Mixing Services for Fruit & Vegetable Juices
- Blu-ray Duplication & Replication
- Boat and Ship Building
- Boat Repair and Maintenance
- Boiler and Condenser Systems
- Book Printing
- Book publishing for learned societies
- Booklet Making
- Booklets/Catalogs
- Bookstores
- Boot Repair
- Boring
- Botanical Extracts
- Bottling
- Bottling and Packaging Services for Distillers
- Business process outsourcing (BPO) services
- Brand Development & Design Services
- Brand Research Studies Focus Groups
- Breeding of Cattle
- Breeding of Horses
- Breeding of ovines
- Breeding of porcines
- Breeding of Swine
- Brewpubs
- Bridge and Tunnels Construction
- Brine Harvesting & Processing
- Briquette Manufacturing
- Broadband and Internet Service Providers
- Broadcast Media Buying and Planning
- Broiler Farming
- Brokerage Services
- Broom, brush and mop making
- Budget Management
- Building completion and finishing activities
- Building Information Modeling (BIM)
- Building Maintenance Services
- Building Material and Supplies Dealers
- Building material distributors
- Building material and garden equipment and supplies dealers
- Building Remodeling and Repair
- Bulk cargo shipping services
- Bulk Fuel Delivery Services
- Bulk Sugar Suppliers
- Bus ticket agencies
- Business Administration Studies
- Business and other management services
- Business Associations
- Business Card and Letterhead Printing
- Business/Commercial Insurance
- Business Consulting
- Business Consulting Services
- Business Delivery Services
- Business Development Companies (BDCs)
- Business Entity Formation and Restructuring
- Business Form and Checkbook Printer Customized Letterhead Printer Poster Printer
- Business Intelligence Solutions
- Business Networks and Forums
- Business Planning and Consulting
- Business Process Improvement Consulting Services
- Business process outsourcing services
- Business software publishing
- Business strategy consulting
- Business support services
- Business Translations and Interpretations
- Business Valuations
- Butchering and Slicing of Meat
- Butchers and fishmongers
- Butter
- Butter Making
- Buttermilk production