- Racing Car Supplies, South Houston
- Radio & Television Repair Shops , South Houston - TV Repair
- Real Estate, South Houston - Agent, Broker & Companies
- Real Estate Developers, South Houston
- Real Estate Management, South Houston
- Real Estate Services, South Houston
- Records, Tapes, CDs - Used & Vintage, South Houston
- Recreational Equipment & Supplies Companies, South Houston
- Recreational Services, South Houston
- Recycling Drop-Off Centers, South Houston
- Recycling Scrap & Waste Materials, South Houston - Scrap Metal, etc
- Refrigeration & Cooling Equipment, Parts & Supplies , South Houston - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Refrigeration Repair & Service, South Houston - Ac, Freezer, Refrigerator Repair
- Rehabilitational Job Training Services, South Houston
- Religious Organizations, South Houston
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- Rental & Leasing Business Equipment, South Houston
- Repair Services, South Houston
- Research Services, South Houston
- Residential, South Houston
- Residential Apartments, South Houston
- Resins Wholesale & Retail, South Houston - Plastic Raw Materials
- Restaurant & Lounge, Bar, Or Pub, South Houston
- Restaurants - Breakfast Brunch Lunch, South Houston
- Restaurants/Food & Dining, South Houston
- Resume Service, South Houston
- Roofing Consultants, South Houston - Roofing Companies
- Roofing Contractors, South Houston - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- RV & Campers Repair & Service, South Houston
- RV Repair, South Houston - Recreational Vehicle
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