| TVS | Thirukkurungudi Vengaram Sundram |
| TDS | Tax Deducted at Source |
| TOEFL | Test of English as a Foreign Language |
| TGT | Trained Graduate Teacher |
| TTYL | Talk To You Later |
| TA & DA | Travelling Allowance & Dearness Allowance |
| TAN | Tax Deduction and Collection Account Number |
| TIN | Taxpayer Identification Number |
| TDR | Ticket Deposit Receipt |
| TDR | Time Domain Reflectometer |
| TFT | Thin Film Transistor |
| TLC | Total Lung Capacity |
| TT | Tetanus Toxoid |
| TRP | Television Rating Point |
| TOI | Times of India |
| TAFE | Tractors and Farm Equipment |
| TBH | To Be Honest |
| TBT | Truth Be Told / Throw Back Thursday |
| TL;DR / TLDR | Too Long that’s why Didn’t Read |
| TIA | Thanks In Advance |
| TRAI | Telecom Regulatory Authority of India |
| TNT | Trinitrotoluene |
| TCP | Transmission Control Protocol |
| TBC | To be Continued / To be Confirmed |
| TGIF | Thanks God, its Friday |
| THX / TNX | Thanks |
| TYVM | Thank you very much |
| TYT | Take your Time |
| TC | Take Care |
| TY | Thank You |
| TNTET | Tamil Nadu Teacher Eligibility Test |
| Tripura TET | Tripura Teacher Eligibility Test |
| TS TET / TSTET | Telangana State Teacher Eligibility Test |
| TSPSC | Telangana State Public Service Commission |
| TNPSC | Tamil Nadu Public Service Commission |
| TSSET | Telangana State Eligibility Test |
| TAH | Total Abdominal Hysterectomy |
| THR | Total Hip Replacement |
| TFT Time Zone | French Southern and Antarctic Time (Standard Time) |
| TJT Time Zone | Tajikistan Time (Standard Time) |
| TKT Time Zone | Tokelau Time (Standard Time) |
| TLT Time Zone | East Timor Time (Standard Time) |
| TMT Time Zone | Turkmenistan Time (Standard Time) |
| TOST Time Zone | Tonga Summer Time (Daylight Saving Time) |
| TOT Time Zone | Tonga Time (Standard Time) |
| TRT Time Zone | Turkey Time (Standard Time) |
| TVT Time Zone | Tuvalu Time (Standard Time) |
