| Abbreviation | Definition |
|---|---|
| TPRC | Terrace Park Recreation Committee |
| TQR | Team Quest Racing |
| TQR | Tullyroan Quad Racing |
| TRA | Thoroughbred Racing Associations |
| TRAC | Team Racing Auto Circuit |
| TRACE | traced |
| TRACE | tracing |
| TRACES | TRACE Trace |
| TRAL | Thunder Racing Alliance League |
| TRAO | Thoroughbred Racing Association of Oklahoma |
| TRC | Telenet Racing Community |
| TRC | That Racing Channel |
| TRD | The Racing Deamons |
| TRD | Toyota Race Driver |
| TRD | Toyota Racing Department |
| TRD | Toyota Racing Development |
| TRD | Toyota Racing Division |
| TRE | Transact Race Engineering |
| TRN | The Racing Network |
| TRNT | Thoroughbred Racing Northern Territory |