| tank components | tank components manufacturers | taxation policy |
| taxi cab | taxi cab service | tax return preparation services |
| technology schools | telegraph | telegraph apparatus |
| telephone apparatus | telephone communication | television |
| television broadcasting companies | television broadcasting stations | television repairs |
| television service | television station | temporary employment agencies |
| terrazzo | testing laboratory | textile bags |
| textile finishing | textile finishing manufacturers | textile goods |
| textile goods manufacturers | textile machinery | textile machinery manufacturers |
| textile parts manufacturers | thai restaurant | theater |
| theatres-movie | theatrical producers | theatrical services |
| tile ceramic | tire dealers | tire distributors |
| tire repairing | tire retreading | title abstract offices |
| title insurance | tobacco dealers | tobacco dealers-wholesale |
| tobacco dealers retail | toilet preparations | tool die makers |
| tool maker | tool parts | top repair |
| tour operators | tours promoters | toys goods |
| toy shops | toys supplies | trade exchange |
| trade schools | trailer manufacturers | transmissions-automobile |
| transportation by air | transportation services | transportation supplies |
| trauma surgeons | travel accommodation | travel agency |
| travel agent | travel industry | tree nuts |
| tree service | trucking | truck rental |
| truss | tug boat services | tunnel construction |
| turbine | tv communication equipment | twine |
| twine manufacturers | typesetting |
