- Radio Stations & Broadcasting Companies, Portland
- Ready Mix Concrete, Portland - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Portland
- Real Estate, Portland - Agent, Broker & Companies
- Real Estate Agent & Broker Services, Portland
- Real Estate Agent - Property Lessors, Portland
- Real Estate Appraiser, Portland - Appraisal Services
- Real Estate Appraisers & Consulting Services, Portland
- Real Estate Broker, Portland
- Real Estate Services, Portland
- Recording Studio Service - Sound & Video, Portland
- Recreational Equipment & Supplies Companies, Portland
- Recycling Drop-Off Centers, Portland
- Recycling Scrap & Waste Materials, Portland - Scrap Metal, etc
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- Refuse Collection & Disposal Services, Portland
- Religious Organizations, Portland
- Rental & Leasing Business Equipment, Portland
- Repair Services, Portland
- Residential, Portland
- Residential Apartments, Portland
- Residential Care Facilities, Portland
- Restaurant & Lounge, Bar, Or Pub, Portland
- Restaurant Equipment, Portland
- Restaurant Equipment & Supplies, Portland
- Restaurant Supplies & Equipment, Portland
- Restaurants/Food & Dining, Portland
- Retirement Communities & Home, Assisted Living & Apartments, Portland
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