- Tank & Pipe Working Industrial Equipment, Leesburg
- Tanning Salons, Leesburg
- Tarps, Leesburg - Tarpaulins
- Tattooing, Leesburg
- Tax Return Preparation, Leesburg
- Tax Services, Leesburg
- Taxidermists, Leesburg - Taxidermy
- Telecommunications, Leesburg
- Telephone Communication Service & Phone Companies, Leesburg - Local & Long Distance Telephone Service
- Television Systems - Closed Circuit Telecasting, Leesburg - CCTV
- Tents, Canopies & Awnings, Leesburg
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- Terrazzo Tile Marble & Mosaic Contractors, Leesburg
- Testing Laboratories, Leesburg - Lab Tests
- Thrift Stores, Resale & Consignment Shops, Leesburg
- Tile Contractors - Install & Repair, Leesburg - Ceramic & Porcelain Tile Flooring - Kitchen & Bathroom
- Tires - Wholesale & Retail, Leesburg
- Tools & Hardware Supplies, Leesburg
- Transportation, Leesburg
- Transportation & Traffic Consultants & Services, Leesburg - Transportation Brokers & Consultants
- Transportation Rental & Leasing, Leesburg
- Travel & Tourism, Leesburg
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