| 2899 | Tablets, metal, manufacturing | |
| 2610 | Tableware (e.g., tumblers, plates), made from purchased glass | |
| 2610 | Tableware (e.g., tumblers, plates), made in glass making plants | |
| 5139 | Tableware, ceramic, wholesale | |
| 2520 | Tableware, plastics (except foam), manufacturing | |
| 7130 | Tableware, rental | |
| 2691 | Tableware, vitreous china, manufacturing | |
| 2029 | Tableware, wood, manufacturing | |
| 5139 | Tabulation cards, wholesale | |
| 3312 | Tachometer generators, manufacturing | |
| 3312 | Tachometers, manufacturing | |
| 5239 | Tack shops | |
| 2029 | Tackle blocks, wood, manufacturing | |
| 3693 | Tackle, fishing, manufacturing | |
| 2899 | Tacks, iron or steel, made in wire drawing plants | |
| 2899 | Tacks, manufacturing | |
| 2899 | Tacks, metal, made from purchased wire | |
| 5143 | Tacks, wholesale | |
| 1310 | Taconite mining | |
| 1711 | Taffeta fabrics, broad-woven, weaving | |
| 3312 | Taffrail logs, manufacturing | |
| 3530 | Tail assemblies and parts (empennage), aircraft, manufacturing | |
| 5260 | Tailor shops (except custom or merchant tailors) | |
| 5260 | Tailor shops (except custom or merchant tailors), repair or alterations | |
| 1810 | Tailored dress and sport coats, men's and boys', cut and sewn from purchased fabric | |
| 3699 | Tailors' chalk, manufacturing | |
| 2893 | Tailors' scissors, manufacturing | |
| 2893 | Tailors' shears, non-powered, manufacturing | |
| 5150 | Tailors' supplies, wholesale | |
| 1810 | Tailors, custom, men's and boys' | |
| 5520 | Take-out food, chicken | |
| 5520 | Take-out food, submarines | |
| 5520 | Take-out restaurant | |
| 5520 | Take-out service, prepared food (except caterers and mobile food services) | |
| 1429 | Talc mining | |
| 2699 | Talc, processing beyond beneficiating | |
| 2424 | Talcum powders, manufacturing | |
| 7499 | Talent agencies | |
| 7412 | Talent payment services | |
| 2411 | Tall oil (except skimmings), manufacturing | |