| taxation policy | taxi cab | taxi cab service |
| tax return preparation services | technology schools | telephone communication |
| television | television broadcasting companies | television broadcasting stations |
| television repairs | television service | temporary employment agencies |
| terrazzo | testing laboratory | textile machinery |
| thai restaurant | theater | theatres-movie |
| theatrical producers | theatrical services | tile ceramic |
| tile ceramic manufacturers | tire dealers | tire distributors |
| tire repairing | tire retreading | tire tubes |
| title abstract offices | title insurance | tobacco dealers |
| 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 | trailer park |
| trailers-automobile utility | trailers automobile utility manufacturers | transmissions-automobile |
| transportation by air | transportation services | transportation supplies |
| trauma surgeons | travel accommodation | travel agency |
| travel agent | travel industry | treated minerals manufacturer |
| tree nuts | tree service | truck body manufacturer |
| trucking | truck rental | truck trailer |
| truss | trusses construction wholesale | t shirt manufacturer |
| tunnel construction | turbine | turbine generator sets |
| tv communication equipment | typesetting |
