| Abbreviation | Definition |
|---|---|
| TSO | Team Support Officer |
| TSO | Time Sharing Opttion |
| TSO | Transmission System Operator |
| TSQ | Temporary Status by Qualification |
| TSR | Technical Service Representative |
| TSR | Technical Support Representative |
| TSR | Tele-Sales Representative |
| TSS | Technical Services Staff |
| TT | Think Tank |
| TT | Township Treasurer |
| TT | Tractor Truckinjobs |
| TTD | Through The Door |
| TTE | Territory Technical Executive |
| TTE | Train Ticket Examiner |
| TTEE | Trustee |
| TTO | Technical Training Officer |
| TTRP | Technical Team Resource Person |
| TTX | Time To eXit |
| TUO | Technology Utilization Officer |
| TVH | Tennessee Valley Homebrewer |