- Radiator Coolant & Solvents, Lexington - Engine Coolant
- Radiators Heating, Lexington
- Radio Stations & Broadcast Companies, Lexington - Radio, Television & Publishers Representatives
- Railroad Cars Manufacturers, Lexington
- Railroad Equipment & Supplies Manufacturers, Lexington
- Real Estate, Lexington - Agent, Broker & Companies
- Real Estate Appraiser, Lexington - Appraisal Services
- Real Estate Appraisers & Consulting Services, Lexington
- Real Estate Consultants, Lexington
- Real Estate Developers, Lexington
- Real Estate Investment Trusts, Lexington
- Real Estate Management, Lexington
- Real Estate Services, Lexington
- Record Destruction Service, Lexington
- Record Storage, Destruction & Management, Lexington
- Recycling Drop-Off Centers, Lexington
- Recycling Scrap & Waste Materials, Lexington - Scrap Metal, etc
- Refuse Collection & Disposal, Lexington
- Refuse Systems & Garbage Disposal, Lexington
- Rehabilitation Centers, Products & Services, Lexington
- Rehabilitation Specialists, Lexington
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- Religious Education, Lexington
- Religious Organizations, Lexington
- Rental & Leasing Business Equipment, Lexington
- Repair Services, Lexington
- Research & Development Bureaus, Lexington - Commercial, Economic, Sociological & Educational Research
- Research & Development Labs, Lexington - Laboratories
- Research Services, Lexington
- Residential, Lexington
- Residential Apartments, Lexington
- Residential Care Facilities, Lexington
- Residential Construction Contractors, Lexington - General Contractors
- Resorts & Hotels, Lexington
- Restaurants/Food & Dining, Lexington
- Retail Book Stores, Lexington
- Retirement Communities & Home, Assisted Living & Apartments, Lexington
- Retirement Home Referral Service, Lexington - Nursing Home & Care Facilities Referrals & Information
- Rigging Service & Crane Hoisting, Lexington
- Road Construction, Lexington - Companies & Contractors
- Road Construction & Repair Contractors, Lexington
- Roofing Consultants, Lexington - Roofing Companies
- Roofing Contractors, Lexington - Roof Repair, Cleaning, Installation & Maintenance - Roofers
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