- Racing Including Track Operations, South Boston
- Radio & Television Repair Shops , South Boston - TV Repair
- Radio Stations & Broadcasting Companies, South Boston
- Railroad Companies, South Boston
- Ready Mix Concrete, South Boston - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, South Boston
- Real Estate, South Boston - Agent, Broker & Companies
- Real Estate Agent - Property Lessors, South Boston
- Real Estate Investment Trusts, South Boston
- Real Estate Services, South Boston
- Recycling Drop-Off Centers, South Boston
- Refrigeration & Cooling Equipment, Parts & Supplies , South Boston - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Refrigeration Repair & Service, South Boston - Ac, Freezer, Refrigerator Repair
- Rehabilitation Centers, Products & Services, South Boston
- Rehabilitation Specialists, South Boston
- Rehabilitational Job Training Services, South Boston
- Religious Goods & Church Supplies Stores, South Boston
- Religious Organizations, South Boston
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- Rental & Leasing Business Equipment, South Boston
- Repair Services, South Boston
- Research Services, South Boston
- Residential, South Boston
- Residential Apartments, South Boston
- Residential Care Facilities, South Boston
- Residential Construction Contractors, South Boston - General Contractors
- Residential Landfills, South Boston
- Resorts & Hotels, South Boston
- Restaurant & Lounge, Bar, Or Pub, South Boston
- Restaurants/Food & Dining, South Boston
- Retail Book Stores, South Boston
- Retirement Communities & Home, Assisted Living & Apartments, South Boston
- Retirement Homes, South Boston
- Roofing Consultants, South Boston - Roofing Companies
- Roofing Contractors, South Boston - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, South Boston
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