- Radio & Television Repair Shops , Suitland - TV Repair
- Radio Equipment & Parts Stores & Dealers, Suitland
- Real Estate, Suitland - Agent, Broker & Companies
- Real Estate Developers, Suitland
- Real Estate Management, Suitland
- Real Estate Services, Suitland
- Record Labels, Suitland - Record Companies
- Recording Studio Service - Sound & Video, Suitland
- Refrigeration & Air Conditioning Contractors, Suitland - Installation, Repair, Sales & Service
- Rehabilitation Centers, Products & Services, Suitland
- Rehabilitation Specialists, Suitland
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- Religious Education, Suitland
- Religious Organizations, Suitland
- Religious Services, Suitland
- Repair Services, Suitland
- Research & Development Labs, Suitland - Laboratories
- Research Services, Suitland
- Residential, Suitland
- Residential Apartments, Suitland
- Residential Construction Contractors, Suitland - General Contractors
- Restaurants/Food & Dining, Suitland
- Rods, Springs & Suspension Equipment & Supplies, Suitland
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