- Tanning Salons, Houston
- Tattooing, Houston
- Tax Return Preparation, Houston
- Telecommunications Companies, Businesses & Services, Houston
- Telephone Communication Service & Phone Companies, Houston - Local & Long Distance Telephone Service
- Thrift Stores, Resale & Consignment Shops, Houston
- Tires - Wholesale & Retail, Houston
- Title & Surety Insurance, Houston
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- Title Companies, Houston - Title Search, Service & Abstract Company
- Towing Service, Houston
- Tractors Equipment & Supplies, Houston
- Transportation, Houston
- Transportation Facilities & Services, Houston
- Travel & Tourism, Houston
- Trophies, Plaques & Awards, Houston
- Truck Rental & Leasing, Houston - Rent a Truck & Tractor
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