- Railroad Contractors
- Ready-Mixed Concrete
- Real Estate Agencies
- Real Estate Appraisers
- Real Estate Lawyers
- Real Estate Management
- Recreation Centres
- Recreation Consultants
- Recreational Vehicle Dealers
- Recreational Vehicle Rental
- Recreational Vehicle Repair
- Refrigeration Contractors
- Refrigerators
- Registered Patent Agents
- Registered Trademark Agents
- Reinforcing Steel Manufacturers
- Religious Organizations
- Renovations
- Restaurant Equipment
- Restaurant Equipment Repair
- Restaurants
- Retirement Homes
- Riding Apparel
- Roof Structures
- Roofers
- Roofing Service Consultants
- Rubber Products
- Rustproofing