- Radio & Television Repair Shops , Pikesville - TV Repair
- Radio Stations & Broadcasting Companies, Pikesville
- Radiologists, Pikesville - Radiology Doctors, Physicians & Surgeons
- Radiotelephone Communications, Pikesville
- Radon Testing & Services, Pikesville
- Real Estate, Pikesville - Agent, Broker & Companies
- Real Estate Agencies, Pikesville
- Real Estate Appraiser, Pikesville - Appraisal Services
- Real Estate Appraisers & Consulting Services, Pikesville
- Real Estate Attorneys & Lawyers, Pikesville
- Real Estate Consultants, Pikesville
- Real Estate Developers, Pikesville
- Real Estate Lawyers & Attorneys, Pikesville
- Real Estate Management, Pikesville
- Real Estate Services, Pikesville
- Reclamation Contractors, Pikesville
- Recording Studio - Equipment & Rental, Pikesville
- Reducing Exercise & Weight Control Services, Pikesville
- Reform Synagogues, Pikesville
- Refrigerator Sales, Service & Repair, Pikesville - Fridge
- Refuse Systems & Garbage Disposal, Pikesville
- Rehabilitation Centers, Pikesville
- Rehabilitation Centers, Products & Services, Pikesville
- Rehabilitation Specialists, Pikesville
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- Religious Organizations, Pikesville
- Religious Practitioners, Pikesville
- Rental & Leasing Business Equipment, Pikesville
- Rental Property Management, Pikesville
- Repair Services, Pikesville
- Research & Development Bureaus, Pikesville - Commercial, Economic, Sociological & Educational Research
- Research Services, Pikesville
- Residential, Pikesville
- Residential Apartments, Pikesville
- Residential Care Facilities, Pikesville
- Residential Construction Contractors, Pikesville - General Contractors
- Restaurant Equipment, Pikesville
- Restaurant Equipment & Supplies, Pikesville
- Restaurant Supplies & Equipment, Pikesville
- Restaurants/Food & Dining, Pikesville
- Retail Book Stores, Pikesville
- Retirement & Estate Planning, Pikesville
- Retirement Communities & Home, Assisted Living & Apartments, Pikesville
- Retirement Home Referral Service, Pikesville - Nursing Home & Care Facilities Referrals & Information
- Retirement Homes, Pikesville
- Retirement Planning Consultants & Services, Pikesville
- Roofing Consultants, Pikesville - Roofing Companies
- Roofing Contractors, Pikesville - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Rooming & Boarding Houses, Pikesville
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