- Racing Car Supplies, Port Perry
- Ready Mix Concrete, Port Perry - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Port Perry
- Real Estate, Port Perry - Agent, Broker & Companies
- Real Estate Agent & Broker Services, Port Perry
- Real Estate Appraiser, Port Perry - Appraisal Services
- Real Estate Appraisers & Consulting Services, Port Perry
- Real Estate Broker, Port Perry
- Real Estate Consultants, Port Perry
- Real Estate Developers, Port Perry
- Real Estate Services, Port Perry
- Record Storage, Destruction & Management, Port Perry
- Recreational Equipment & Supplies Companies, Port Perry
- Recreational Services, Port Perry
- Recycling Drop-Off Centers, Port Perry
- Recycling Scrap & Waste Materials, Port Perry - Scrap Metal, etc
- Refrigerated Beverage Dispenser, Port Perry - Water Coolers Equipment & Supplies
- Refrigeration & Cooling Equipment, Parts & Supplies , Port Perry - Water Cooler, Ice Machine, Beverage Dispenser, etc
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- Refrigerator Sales, Service & Repair, Port Perry - Fridge
- Rehabilitational Job Training Services, Port Perry
- Religious Organizations, Port Perry
- Repair Services, Port Perry
- Research Services, Port Perry
- Residential Care Facilities, Port Perry
- Restaurants/Food & Dining, Port Perry
- Retirement Communities & Home, Assisted Living & Apartments, Port Perry
- Retirement Homes, Port Perry
- Riding & Rodeo Services, Port Perry
- Riding Apparel & Equipment, Port Perry
- Roadside Assistance, Road Service & Towing Service, Port Perry
- Roofing Consultants, Port Perry - Roofing Companies
- Roofing Contractors, Port Perry - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Rubber Products - Retail, Port Perry
- RV & Campers Repair & Service, Port Perry
- RV Repair, Port Perry - Recreational Vehicle
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