- Racing Car Supplies, Columbus
- Racing Including Track Operations, Columbus
- Radiator Coolant & Solvents, Columbus - Engine Coolant
- Radio & Television Repair Shops , Columbus - TV Repair
- Radio Communications Equipment & Systems , Columbus
- Radio Stations & Broadcast Companies, Columbus - Radio, Television & Publishers Representatives
- Radio Stations & Broadcasting Companies, Columbus
- Railroad & Subway Construction Contractors, Columbus
- Railroad Companies, Columbus
- Railroad Contractors, Columbus
- Ready Mix Concrete, Columbus - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Columbus
- Real Estate, Columbus - Agent, Broker & Companies
- Real Estate Agent & Broker Services, Columbus
- Real Estate Agent - Property Lessors, Columbus
- Real Estate Appraiser, Columbus - Appraisal Services
- Real Estate Appraisers & Consulting Services, Columbus
- Real Estate Broker, Columbus
- Real Estate Consultants, Columbus
- Real Estate Farms & Ranches, Columbus
- Real Estate Properties, Columbus
- Real Estate Services, Columbus
- Record Storage, Destruction & Management, Columbus
- Recreational Equipment Repair & Service, Columbus
- Recycling Drop-Off Centers, Columbus
- Recycling Scrap & Waste Materials, Columbus - Scrap Metal, etc
- Refrigeration & Cooling Equipment, Parts & Supplies , Columbus - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Refrigeration Repair & Service, Columbus - Ac, Freezer, Refrigerator Repair
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- Refrigerator Sales, Service & Repair, Columbus - Fridge
- Rehabilitation Centers, Products & Services, Columbus
- Rehabilitation Specialists, Columbus
- Religious Education, Columbus
- Religious Organizations, Columbus
- Repair Services, Columbus
- Research Services, Columbus
- Residential, Columbus
- Residential Apartments, Columbus
- Residential Care Facilities, Columbus
- Residential Construction Contractors, Columbus - General Contractors
- Restaurant & Lounge, Bar, Or Pub, Columbus
- Restaurant Equipment, Columbus
- Restaurant Equipment & Supplies, Columbus
- Restaurant Equipment Cleaning, Columbus - Restaurant Cleaners
- Restaurant Management & Consulting, Columbus - Food Facilities Consultants
- Restaurant Supplies & Equipment, Columbus
- Restaurants - Breakfast Brunch Lunch, Columbus
- Restaurants/Food & Dining, Columbus
- Retail Book Stores, Columbus
- Retaining Wall Contractors, Columbus - Build & Repair - Blocks, Concrete, Stones, etc
- Retirement Communities & Home, Assisted Living & Apartments, Columbus
- Rigging Service & Crane Hoisting, Columbus
- Roofing Consultants, Columbus - Roofing Companies
- Roofing Contractors, Columbus - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Rv Parks, Columbus
- RV Parts, Accessories & Equipment, Columbus - ATV & Recreation Vehicles
- RV Repair & Service, Columbus - ATV & Recreation Vehicles
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