- Radio & Television Repair Shops , Ridgeland - TV Repair
- Radio Stations & Broadcasting Companies, Ridgeland
- Railroad, Ridgeland - Commuter & Passenger Transport
- Ready Mix Concrete, Ridgeland - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Ridgeland
- Real Estate, Ridgeland - Agent, Broker & Companies
- Real Estate Agent & Broker Services, Ridgeland
- Real Estate Broker, Ridgeland
- Real Estate Developers, Ridgeland
- Real Estate Management, Ridgeland
- Real Estate Services, Ridgeland
- Recreational Equipment & Supplies Companies, Ridgeland
- Recycling Drop-Off Centers, Ridgeland
- Refrigeration Repair & Service, Ridgeland - Ac, Freezer, Refrigerator Repair
- Refuse Collection & Disposal Services, Ridgeland
- Refuse Systems & Garbage Disposal, Ridgeland
- Rehabilitational Job Training Services, Ridgeland
- Religious Education, Ridgeland
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- Religious Organizations, Ridgeland
- Repair Services, Ridgeland
- Residential, Ridgeland
- Residential Apartments, Ridgeland
- Residential Care Facilities, Ridgeland
- Residential Construction Contractors, Ridgeland - General Contractors
- Residential Real Estate - Rental & Leasing, Ridgeland
- Resorts & Hotels, Ridgeland
- Restaurant & Lounge, Bar, Or Pub, Ridgeland
- Restaurant Lobster, Ridgeland
- Restaurants - Breakfast Brunch Lunch, Ridgeland
- Restaurants/Food & Dining, Ridgeland
- Rifle & Pistol Ranges, Ridgeland
- Road Construction, Ridgeland - Companies & Contractors
- Roofing Consultants, Ridgeland - Roofing Companies
- Roofing Contractors, Ridgeland - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, Ridgeland
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