- Racing Car Supplies, Portland
- Radiator Coolant & Solvents, Portland - Engine Coolant
- Radiator Repair, Portland - Gas Tank Repair
- Radio & Television Repair Shops , Portland - TV Repair
- Radio Communications Equipment & Systems , Portland
- Radio Stations & Broadcast Companies, Portland - Radio, Television & Publishers Representatives
- Radio Stations & Broadcasting Companies, Portland
- Radon Testing & Services, Portland
- Rail Line Travel Agents & Agencies, Portland
- Railroad, Portland - Commuter & Passenger Transport
- Railroad Companies, Portland
- Rape Victim Services, Portland
- Reading Instruction Schools, 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 Attorneys & Lawyers, Portland
- Real Estate Attorneys & Lawyers, Portland
- Real Estate Broker, Portland
- Real Estate Consultants, Portland
- Real Estate Developers, Portland
- Real Estate Lawyers & Attorneys, Portland
- Real Estate Management, Portland
- Real Estate Properties, Portland
- Real Estate Property Investment Properties, Portland
- Real Estate Rentals, Portland
- Real Estate Services, Portland
- Record Storage, Destruction & Management, Portland
- Recording Studio Equipment, Portland
- Recording Studio Service - Sound & Video, Portland
- Records, Tapes, CDs - Used & Vintage, Portland
- Recreation Facilities Management, Portland
- Recreation Management Services, Portland
- Recreational Services, Portland
- Recycling Drop-Off Centers, Portland
- Recycling Scrap & Waste Materials, Portland - Scrap Metal, etc
- Reducing Exercise & Weight Control Services, Portland
- Refrigerated Storage & Warehouse, Portland - Warehousing
- Refrigerated Truck, Portland
- Refrigeration & Cooling Equipment, Parts & Supplies , Portland - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Refrigeration Repair & Service, Portland - Ac, Freezer, Refrigerator Repair
- Refrigerator & Freezer Equipment, Parts & Supplies, Portland
- Refrigerator Sales, Service & Repair, Portland - Fridge
- Refuse Collection & Disposal, Portland
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- Refuse Collection & Disposal Services, Portland
- Refuse Systems & Garbage Disposal, Portland
- Rehabilitation Centers, Portland
- Rehabilitation Centers, Products & Services, Portland
- Rehabilitation Specialists, Portland
- Rehabilitational Job Training Services, Portland
- Relief Organizations, Portland
- Religious Organizations, Portland
- Rental & Leasing Business Equipment, Portland
- Repair Services, Portland
- Research & Development Bureaus, Portland - Commercial, Economic, Sociological & Educational Research
- Research & Development Labs, Portland - Laboratories
- Research Service Libraries, Portland
- Research Services, Portland
- Residential, Portland
- Residential Apartments, Portland
- Residential Construction Contractors, Portland - General Contractors
- Resorts & Hotels, Portland
- Resource Centers, Portland
- Restaurant & Food Service Management Services, Portland
- Restaurant & Lounge, Bar, Or Pub, Portland
- Restaurant Equipment, Portland
- Restaurant Equipment & Supplies, Portland
- Restaurant Information & Referral Service, Portland
- Restaurant Lobster, Portland
- Restaurant Supplies & Equipment, Portland
- Restaurants - Breakfast Brunch Lunch, Portland
- Restaurants/Food & Dining, Portland
- Resume Service, Portland
- Retail Book Stores, Portland
- Retaining Wall Contractors, Portland - Build & Repair - Blocks, Concrete, Stones, etc
- Retirement & Estate Planning, Portland
- Retirement Communities & Home, Assisted Living & Apartments, Portland
- Retirement Planning Consultants & Services, Portland
- Retreat Facilities & Houses, Portland
- Rheumatologists, Portland - Rheumatology Doctors, Physicians & Surgeons
- Riding & Rodeo Services, Portland
- Rigging Equipment & Supplies, Portland
- Rigging Service & Crane Hoisting, Portland
- Risk Management Consultants, Portland
- Roadside Assistance, Road Service & Towing Service, Portland
- Rods, Springs & Suspension Equipment & Supplies, Portland
- Roof Repair, Portland - Roofing Repair Services
- Roofing Consultants, Portland - Roofing Companies
- Roofing Contractors, Portland - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, Portland
- Rooming & Boarding Houses, Portland
- Rugs And Tapestries, Portland
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