- Radio & Television Repair Shops , Richardson - TV Repair
- Radio Stations & Broadcasting Companies, Richardson
- Radiologists, Richardson - Radiology Doctors, Physicians & Surgeons
- Radiotelephone Communications, Richardson
- Radon Testing & Services, Richardson
- Ready Mix Concrete, Richardson - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Richardson
- Real Estate, Richardson - Agent, Broker & Companies
- Real Estate Agent & Broker Services, Richardson
- Real Estate Agent - Property Lessors, Richardson
- Real Estate Apartments & Residential, Richardson
- Real Estate Appraiser, Richardson - Appraisal Services
- Real Estate Appraisers & Consulting Services, Richardson
- Real Estate Broker, Richardson
- Real Estate Consultants, Richardson
- Real Estate Developers, Richardson
- Real Estate Inspectors, Richardson - Real Estate Inspection Service
- Real Estate Management, Richardson
- Real Estate Properties, Richardson
- Real Estate Property Condominiums, Richardson
- Real Estate Property Investment Properties, Richardson
- Real Estate Rentals, Richardson
- Real Estate Services, Richardson
- Real Estate Services Franchises, Richardson
- Record Storage, Destruction & Management, Richardson
- Recording Studio - Equipment & Rental, Richardson
- Records, Tapes, CDs - Used & Vintage, Richardson
- Recreational Equipment & Supplies Companies, Richardson
- Recreational Good Manufacturers, Richardson
- Recreational Services, Richardson
- Recycling Scrap & Waste Materials, Richardson - Scrap Metal, etc
- Red Wing Shoes, Richardson
- Reducing Exercise & Weight Control Services, Richardson
- Reformed Churches, Richardson
- Refrigerated Storage & Warehouse, Richardson - Warehousing
- Refrigerated Truck, Richardson
- Refrigeration & Air Conditioning Contractors, Richardson - Installation, Repair, Sales & Service
- Refrigeration Repair & Service, Richardson - Ac, Freezer, Refrigerator Repair
- Rehabilitation Centers, Products & Services, Richardson
- Rehabilitation Specialists, Richardson
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- Religious Organizations, Richardson
- Religious Services, Richardson
- Rental & Leasing Business Equipment, Richardson
- Repair Services, Richardson
- Reprographic Services, Richardson
- Research & Development Bureaus, Richardson - Commercial, Economic, Sociological & Educational Research
- Research & Development Labs, Richardson - Laboratories
- Research Film Laboratories & Film Services Motion Pictures, Richardson
- Research Services, Richardson
- Residential, Richardson
- Residential Apartments, Richardson
- Residential Architect, Richardson
- Residential Architectural Designers, Richardson
- Residential Care Facilities, Richardson
- Residential Construction Contractors, Richardson - General Contractors
- Residential Lighting Fixtures Manufacturers, Richardson
- Residential Real Estate Companies, Richardson
- Resorts & Hotels, Richardson
- Respiratory Medical Services, Richardson
- Respiratory Therapy, Richardson
- Restaurant & Lounge, Bar, Or Pub, Richardson
- Restaurant Equipment, Richardson
- Restaurant Equipment & Supplies, Richardson
- Restaurant Equipment Repair & Service, Richardson - Bakery, Beverage, Food & Soda Fountain Equipment
- Restaurant Management & Consulting, Richardson - Food Facilities Consultants
- Restaurant Supplies & Equipment, Richardson
- Restaurants - Breakfast Brunch Lunch, Richardson
- Restaurants/Food & Dining, Richardson
- Restoration Contractors, Richardson
- Retirement & Estate Planning, Richardson
- Retirement Communities & Home, Assisted Living & Apartments, Richardson
- Retirement Planning Consultants & Services, Richardson
- Riding & Rodeo Services, Richardson
- Rifle & Pistol Ranges, Richardson
- Roadside Assistance, Road Service & Towing Service, Richardson
- Roof Cleaning & Maintenance, Richardson - Roofing Services
- Roof Repair, Richardson - Roofing Repair Services
- Roofing Consultants, Richardson - Roofing Companies
- Roofing Contractors, Richardson - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, Richardson
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