- Racing Car Supplies, Columbiana
- Railroad Companies, Columbiana
- Rain Gutters & Downspouts, Columbiana
- Ready Mix Concrete, Columbiana - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Columbiana
- Real Estate, Columbiana - Agent, Broker & Companies
- Real Estate Appraiser, Columbiana - Appraisal Services
- Real Estate Appraisers & Consulting Services, Columbiana
- Real Estate Developers, Columbiana
- Real Estate Services, Columbiana
- Recording Instruments Industrial & Scientific, Columbiana
- Recycling Drop-Off Centers, Columbiana
- Refrigerated Truck, Columbiana
- Refrigeration & Cooling Equipment, Parts & Supplies , Columbiana - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Refrigeration Repair & Service, Columbiana - Ac, Freezer, Refrigerator Repair
- Rehabilitation Centers, Products & Services, Columbiana
- Rehabilitation Specialists, Columbiana
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- Religious Education, Columbiana
- Religious Goods & Church Supplies Stores, Columbiana
- Religious Organizations, Columbiana
- Repair Services, Columbiana
- Research & Development Bureaus, Columbiana - Commercial, Economic, Sociological & Educational Research
- Research Services, Columbiana
- Residential, Columbiana
- Residential Apartments, Columbiana
- Residential Architectural Designers, Columbiana
- Residential Care Facilities, Columbiana
- Restaurant Equipment Repair & Service, Columbiana - Bakery, Beverage, Food & Soda Fountain Equipment
- Restaurants/Food & Dining, Columbiana
- Retirement Communities & Home, Assisted Living & Apartments, Columbiana
- Roofing Consultants, Columbiana - Roofing Companies
- Roofing Contractors, Columbiana - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, Columbiana
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