TRT is a TLA that may stand for:
- Tactical Rescue Training
- Tactical response team
- Tahoe Rim Trail
- TANSTAAFL Research and Trading (trt.com)
- Technical recovery team
- Technical rescue team
- Technical review team
- Temple Rodeph Torah (trt.org)
- TEREC Remote Terminal
- Testosterone replacement therapy
- The Right Tool
- Therapeutic recreational technician
- Thoracic radiation therapy
- Tinnitus retraining therapy
- Trademark Registration Treaty
- Transition radiation tracker
- Transportation Research Thesaurus
- Trauma release therapy
- Turkey rhinotracheitis
- Turkish Radio Television
- Tyranny Response Team