- Radiator Coolant & Solvents, West Warwick - Engine Coolant
- Radio & Television Repair Shops , West Warwick - TV Repair
- Radio Communications Equipment & Systems , West Warwick
- Railroad Companies, West Warwick
- Real Estate, West Warwick - Agent, Broker & Companies
- Real Estate Agent & Broker Services, West Warwick
- Real Estate Agent - Property Lessors, West Warwick
- Real Estate Broker, West Warwick
- Real Estate Management, West Warwick
- Real Estate Services, West Warwick
- Recreational Organizations, West Warwick
- Rehabilitation Centers, Products & Services, West Warwick
- Rehabilitation Specialists, West Warwick
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- Religious Organizations, West Warwick
- Repair Services, West Warwick
- Research Services, West Warwick
- Residential, West Warwick
- Residential Apartments, West Warwick
- Residential Construction Contractors, West Warwick - General Contractors
- Resins Wholesale & Retail, West Warwick - Plastic Raw Materials
- Restaurant Equipment Repair & Service, West Warwick - Bakery, Beverage, Food & Soda Fountain Equipment
- Restaurants/Food & Dining, West Warwick
- Roofing Consultants, West Warwick - Roofing Companies
- Roofing Contractors, West Warwick - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Rooming & Boarding Houses, West Warwick
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