- Racing Car Supplies, Elmont
- Racing Including Track Operations, Elmont
- Radiator Coolant & Solvents, Elmont - Engine Coolant
- Radio & Television Repair Shops , Elmont - TV Repair
- Radio & Tv Communications Equipment Manufacturers, Elmont
- Radio Communications Equipment & Systems , Elmont
- Radio Stations & Broadcasting Companies, Elmont
- Radiologists, Elmont - Radiology Doctors, Physicians & Surgeons
- Radiology Equipment & Services, Elmont - X-Ray Equipment & Supplies
- Radiotelephone Communications, Elmont
- Railroad & Subway Construction Contractors, Elmont
- Railroad Companies, Elmont
- Railroad Contractors, Elmont
- Real Estate, Elmont - Agent, Broker & Companies
- Real Estate Agencies, Elmont
- Real Estate Appraiser, Elmont - Appraisal Services
- Real Estate Appraisers & Consulting Services, Elmont
- Real Estate Consultants, Elmont
- Real Estate Management, Elmont
- Real Estate Services, Elmont
- Record Labels, Elmont - Record Companies
- Recording Studio Service - Sound & Video, Elmont
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- Records, Tapes, CDs - Used & Vintage, Elmont
- Recreational Equipment & Supplies Companies, Elmont
- Recreational Services, Elmont
- Refiners & Smelters Metals, Elmont
- Refuse Collection & Disposal, Elmont
- Refuse Systems & Garbage Disposal, Elmont
- Rehabilitation Centers, Products & Services, Elmont
- Rehabilitation Specialists, Elmont
- Religious Counseling, Elmont
- Religious Organizations, Elmont
- Religious Practitioners, Elmont
- Religious Services, Elmont
- Repair Services, Elmont
- Residential, Elmont
- Residential Construction Contractors, Elmont - General Contractors
- Residential Real Estate Companies, Elmont
- Restaurant & Food Service Management Services, Elmont
- Restaurant & Lounge, Bar, Or Pub, Elmont
- Restaurants/Food & Dining, Elmont
- Riding & Rodeo Services, Elmont
- Riding Apparel & Equipment, Elmont
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