- Ready Mix Concrete, Portland - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Portland
- Real Estate, Portland - Agent, Broker & Companies
- Real Estate Agent - Property Lessors, Portland
- Real Estate Services, Portland
- Recycling Scrap & Waste Materials, Portland - Scrap Metal, etc
- Rehabilitational Job Training Services, Portland
- Relief Organizations, Portland
- Religious Organizations, Portland
- Religious Practitioners, Portland
- Rent To Own Furniture, Portland
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- Rental & Leasing Business Equipment, Portland
- Repair Services, Portland
- Research & Development Bureaus, Portland - Commercial, Economic, Sociological & Educational Research
- Research Services, Portland
- Residential, Portland
- Residential Apartments, Portland
- Residential Care Facilities, Portland
- Restaurants/Food & Dining, Portland
- Roofing Consultants, Portland - Roofing Companies
- Roofing Contractors, Portland - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Rv Parks, Portland
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