| Abbreviation | Definition |
|---|---|
| TSP | Turret Stock Picker |
| TSS | Toyota Safety Sense |
| TSS | Trifling Speaker Stands |
| TSS | Triple Screw Steamer |
| TST | Triple Surface Treatment |
| TST | Twin Scroll Turbine |
| TT | Toilet Tissue |
| TT | Turbo Twin |
| TT | Twin Tip |
| TT(d) | tuberculin test(ed) |
| TTA | Tower Top Amplifier |
| TTB | Twin Traction Beam |
| TTF | Tag Talk First |
| TTF | Total Tuning Finish |
| TTFD | Tactical Timed Firing Device (Stratom TM) |
| TTG | Two To Go Coffeemaker |
| TTRP | Treated Toxin Reaction Products |
| TTRU | Trolley Tokens R Us |
| TTSM | Territorial technical service manager |
| TTW-HP | Through-The-Wall Heart Pump |