- Radio & Television Repair Shops , Katonah - TV Repair
- Radio & Tv Communications Equipment Manufacturers, Katonah
- Real Estate, Katonah - Agent, Broker & Companies
- Real Estate Agent - Property Lessors, Katonah
- Real Estate Appraiser, Katonah - Appraisal Services
- Real Estate Appraisers & Consulting Services, Katonah
- Real Estate Services, Katonah
- Recording Studio Service - Sound & Video, Katonah
- Rehabilitation Centers, Products & Services, Katonah
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- Rehabilitation Specialists, Katonah
- Religious Organizations, Katonah
- Repair Services, Katonah
- Residential Construction Contractors, Katonah - General Contractors
- Restaurants/Food & Dining, Katonah
- Retirement Communities & Home, Assisted Living & Apartments, Katonah
- Riding & Rodeo Services, Katonah
- Roofing Consultants, Katonah - Roofing Companies
- Roofing Contractors, Katonah - Roof Repair, Cleaning, Installation & Maintenance - Roofers
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