- Tattooing, Sheffield
- Tax Return Preparation, Sheffield
- Taxi Cab Service, Sheffield
- Taxi Service, Sheffield
- Telecommunications, Sheffield
- Telephone Answering & Secretarial Service, Sheffield
- Telephone Answering Service, Sheffield - Messenger Services
- Telephone Equipment & Phone Systems, Sheffield - Sales, Service & Repair
- Telephone Equipment & Systems - Repair & Service, Sheffield - Telecommunication Services
- Television Systems - Closed Circuit Telecasting, Sheffield - CCTV
- Temp Agencies, Sheffield
- Temporary & Contractor Agencies, Sheffield
- Thrift Stores, Resale & Consignment Shops, Sheffield
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- Tire Repair, Recapping & Retread, Sheffield
- Tires - Wholesale & Retail, Sheffield
- Tools & Hardware Supplies, Sheffield
- Towing Service, Sheffield
- Trailer Hitch, Sheffield - Accessories, Parts, Installation, etc
- Trailer Parts & Equipment, Sheffield
- Trailer Repair, Sheffield - Travel, Utility, Cargo, Boat Trailer, etc
- Transmission Repair & Service, Sheffield
- Transportation, Sheffield
- Transportation & Traffic Consultants & Services, Sheffield - Transportation Brokers & Consultants
- Travel & Tourism, Sheffield
- Truck Rental & Leasing, Sheffield - Rent a Truck & Tractor
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