- Race Track Equipment & Supplies, Knoxville
- Racing Car Supplies, Knoxville
- Racing Including Track Operations, Knoxville
- Radiator Coolant & Solvents, Knoxville - Engine Coolant
- Radiator Repair, Knoxville - Gas Tank Repair
- Radio & Television Repair Shops , Knoxville - TV Repair
- Radio Communications Equipment & Systems , Knoxville
- Radio Equipment & Parts Stores & Dealers, Knoxville
- Radio Stations & Broadcast Companies, Knoxville - Radio, Television & Publishers Representatives
- Radio Stations & Broadcasting Companies, Knoxville
- Radiologists, Knoxville - Radiology Doctors, Physicians & Surgeons
- Radiology Equipment & Services, Knoxville - X-Ray Equipment & Supplies
- Radon Testing & Services, Knoxville
- Rail Line Travel Agents & Agencies, Knoxville
- Railroad, Knoxville - Commuter & Passenger Transport
- Railroad & Subway Construction Contractors, Knoxville
- Railroad Companies, Knoxville
- Railroad Contractors, Knoxville
- Reading Instruction Schools, Knoxville
- Ready Mix Concrete, Knoxville - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Knoxville
- Real Estate, Knoxville - Agent, Broker & Companies
- Real Estate & Insurance Schools, Knoxville
- Real Estate Agencies, Knoxville
- Real Estate Agent & Broker Services, Knoxville
- Real Estate Agent - Property Lessors, Knoxville
- Real Estate Appraiser, Knoxville - Appraisal Services
- Real Estate Appraisers & Consulting Services, Knoxville
- Real Estate Broker, Knoxville
- Real Estate Consultants, Knoxville
- Real Estate Developers, Knoxville
- Real Estate Management, Knoxville
- Real Estate Properties, Knoxville
- Real Estate Property Investment Properties, Knoxville
- Real Estate Rentals, Knoxville
- Real Estate Research Services, Knoxville
- Real Estate Services, Knoxville
- Real Estate Services Franchises, Knoxville
- Real Estate Support Services, Knoxville
- Record Labels, Knoxville - Record Companies
- Record Storage, Destruction & Management, Knoxville
- Recording Studio Equipment, Knoxville
- Recording Studio Service - Sound & Video, Knoxville
- Records, Tapes, CDs - Used & Vintage, Knoxville
- Recreational Equipment & Supplies Companies, Knoxville
- Recreational Equipment Repair & Service, Knoxville
- Recreational Good Manufacturers, Knoxville
- Recreational Organizations, Knoxville
- Recreational Services, Knoxville
- Recreational Vehicles & Campers Rent & Lease, Knoxville
- Recycling Drop-Off Centers, Knoxville
- Recycling Scrap & Waste Materials, Knoxville - Scrap Metal, etc
- Red Wing Shoes, Knoxville
- Reducing Exercise & Weight Control Services, Knoxville
- Refiners & Smelters Metals, Knoxville
- Refreshment Stands, Knoxville
- Refrigerated Truck, Knoxville
- Refrigeration & Air Conditioning Contractors, Knoxville - Installation, Repair, Sales & Service
- Refrigeration & Cooling Equipment, Parts & Supplies , Knoxville - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Refrigeration Repair & Service, Knoxville - Ac, Freezer, Refrigerator Repair
- Refrigerator & Freezer Equipment, Parts & Supplies, Knoxville
- Refrigerator Sales, Service & Repair, Knoxville - Fridge
- Refuse Collection & Disposal, Knoxville
- Refuse Collection & Disposal Services, Knoxville
- Refuse Systems & Garbage Disposal, Knoxville
- Registered Education Savings Plan, Knoxville
- Rehabilitation Centers, Knoxville
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- Rehabilitation Centers, Products & Services, Knoxville
- Rehabilitation Specialists, Knoxville
- Rehabilitational Job Training Services, Knoxville
- Relief Organizations, Knoxville
- Religious Education, Knoxville
- Religious Goods & Church Supplies Stores, Knoxville
- Religious Organizations, Knoxville
- Religious Practitioners, Knoxville
- Religious Services, Knoxville
- Relocation Services, Knoxville
- Rendering Companies, Knoxville
- Rental & Leasing Business Equipment, Knoxville
- Repair Services, Knoxville
- Research & Development Bureaus, Knoxville - Commercial, Economic, Sociological & Educational Research
- Research & Development Labs, Knoxville - Laboratories
- Research Services, Knoxville
- Residential, Knoxville
- Residential Apartments, Knoxville
- Residential Architect, Knoxville
- Residential Care Facilities, Knoxville
- Residential Construction Contractors, Knoxville - General Contractors
- Residential Landfills, Knoxville
- Residential Real Estate - Rental & Leasing, Knoxville
- Resorts & Hotels, Knoxville
- Resource Centers, Knoxville
- Restaurant & Food Service Management Services, Knoxville
- Restaurant & Lounge, Bar, Or Pub, Knoxville
- Restaurant Equipment, Knoxville
- Restaurant Equipment & Supplies, Knoxville
- Restaurant Equipment Repair & Service, Knoxville - Bakery, Beverage, Food & Soda Fountain Equipment
- Restaurant Lobster, Knoxville
- Restaurant Management & Consulting, Knoxville - Food Facilities Consultants
- Restaurant Supplies & Equipment, Knoxville
- Restaurants - Breakfast Brunch Lunch, Knoxville
- Restaurants/Food & Dining, Knoxville
- Restoration Contractors, Knoxville
- Retail Book Stores, Knoxville
- Retaining Wall Contractors, Knoxville - Build & Repair - Blocks, Concrete, Stones, etc
- Retirement & Estate Planning, Knoxville
- Retirement Communities & Home, Assisted Living & Apartments, Knoxville
- Retirement Planning Consultants & Services, Knoxville
- Reverends, Knoxville
- Rheem / Rudd Heating & Air Conditioning Contractors, Knoxville - Air Conditioner Contractors & Systems
- Rheem/Rudd Retail, Knoxville
- Rheumatologists, Knoxville - Rheumatology Doctors, Physicians & Surgeons
- Rice Products, Knoxville
- Riding & Rodeo Services, Knoxville
- Riding Apparel & Equipment, Knoxville
- Rigging Equipment & Supplies, Knoxville
- Rigging Service & Crane Hoisting, Knoxville
- Risk Management Consultants, Knoxville
- Road Construction, Knoxville - Companies & Contractors
- Road Construction & Repair Contractors, Knoxville
- Road Construction Equipment & Machinery, Knoxville
- Roadside Assistance, Road Service & Towing Service, Knoxville
- Roller Skating Rinks, Knoxville
- Roof Cleaning & Maintenance, Knoxville - Roofing Services
- Roofing & Siding Materials, Equipments & Supplies, Knoxville - Wholesale, Manufacturers & Suppliers
- Roofing Consultants, Knoxville - Roofing Companies
- Roofing Contractors, Knoxville - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, Knoxville
- Rooming & Boarding Houses, Knoxville
- Rubber Products - Retail, Knoxville
- RV & Campers Repair & Service, Knoxville
- Rv Parks, Knoxville
- RV Repair, Knoxville - Recreational Vehicle
- Rvs Sales, Rental & Leasing, Knoxville
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