- Radio Stations & Broadcasting Companies, Derby
- Ready Mix Concrete, Derby - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Derby
- Real Estate, Derby - Agent, Broker & Companies
- Real Estate Appraiser, Derby - Appraisal Services
- Real Estate Appraisers & Consulting Services, Derby
- Real Estate Services, Derby
- Recycling Scrap & Waste Materials, Derby - Scrap Metal, etc
- Refuse Collection & Disposal, Derby
- Refuse Systems & Garbage Disposal, Derby
- Rehabilitational Job Training Services, Derby
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- Religious Organizations, Derby
- Repair Services, Derby
- Research Services, Derby
- Residential, Derby
- Residential Apartments, Derby
- Residential Care Facilities, Derby
- Restaurant & Lounge, Bar, Or Pub, Derby
- Restaurants/Food & Dining, Derby
- Roofing Consultants, Derby - Roofing Companies
- Roofing Contractors, Derby - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Rubber Products - Retail, Derby
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