| Abbreviation | Definition |
|---|---|
| TTIL | T T I Team Telecom International |
| TTLN | Total Entertainment, Inc. |
| TTMC | Touchtunes Music Corporation |
| TTMT | Tower Technologies, Inc. |
| TTNC | Teltone Corporation |
| TTOR | Trastector Systems, Inc. |
| TTPA | Trintech Group |
| TTRE | T T R Technologies, Inc. |
| TTRIF | Thermo Tech Technologies, Inc. |
| TTWO | Take-2 Interactive Software |
| TTXI | Telco Technology, Inc. |
| TTYP | Trinity Petroleum Trust |
| TUBY | Tubby's, Inc. |
| TUEPRA | Texas Utilities Electric Company US Holdings Company Preferred A |
| TUEPRB | Texas Utilities Electric Company US Holdings Company Preferred B |
| TUES | Tuesday Morning Corporation |
| TUFC | Tufco International, Inc. |
| TUHUM | Texas Utilities Electric Company US Holdings Company |
| TUHUN | Texas Utilities Electric Company US Holdings Company |
| TUHUO | Texas Utilities Electric Company US Holdings Company |