- Racing Including Track Operations, Williamston
- Radio & Tv Communications Equipment Manufacturers, Williamston
- Radio Stations & Broadcast Companies, Williamston - Radio, Television & Publishers Representatives
- Real Estate, Williamston - Agent, Broker & Companies
- Real Estate Rentals, Williamston
- Real Estate Services, Williamston
- Recycling Drop-Off Centers, Williamston
- Refrigeration & Cooling Equipment, Parts & Supplies , Williamston - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Refrigerator & Freezer Equipment, Parts & Supplies, Williamston
- Refuse Collection & Disposal Services, Williamston
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- Religious Organizations, Williamston
- Repair Services, Williamston
- Residential, Williamston
- Residential Apartments, Williamston
- Residential Construction Contractors, Williamston - General Contractors
- Restaurants/Food & Dining, Williamston
- Roofing Consultants, Williamston - Roofing Companies
- Roofing Contractors, Williamston - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, Williamston
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