- Radio Stations & Broadcasting Companies, Barbourville
- Radiologists, Barbourville - Radiology Doctors, Physicians & Surgeons
- Railroad & Subway Construction Contractors, Barbourville
- Railroad Contractors, Barbourville
- Real Estate, Barbourville - Agent, Broker & Companies
- Real Estate Developers, Barbourville
- Real Estate Services, Barbourville
- Recording Studio - Equipment & Rental, Barbourville
- Recording Studio Service - Sound & Video, Barbourville
- Recycling Drop-Off Centers, Barbourville
- Refuse Collection & Disposal Services, Barbourville
- Religious Education, Barbourville
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- Religious Organizations, Barbourville
- Religious Practitioners, Barbourville
- Rent To Own Furniture, Barbourville
- Rental & Leasing Business Equipment, Barbourville
- Repair Services, Barbourville
- Research Services, Barbourville
- Residential, Barbourville
- Residential Apartments, Barbourville
- Restaurants/Food & Dining, Barbourville
- Retail Book Stores, Barbourville
- Rigging Service & Crane Hoisting, Barbourville
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