TRT may refer to:
In broadcasting:
- Tamil Radio and Television, a former Tamil language satellite channel
- Televisora Regional del Táchira, a Venezuelan regional television network based in the city of San Cristóbal in Táchira
- Thessalian Radio Television, a Greek regional television station based in Thessaly Greece
- Total Running Time - used to describe the length of time / duration of a piece of media
- Turkish Radio and Television Corporation, the national public broadcaster of Turkey
In engineering:
- Total run time (program lifecycle phase), the duration of a computer program's execution
- Transition radiation tracker, a component of the ATLAS experiment
- Transport relay translation, an IPv6 translation mechanism to translate between different versions of the Internet Protocol
In geography:
- Tahoe Rim Trail in Nevada & California, United States
- Tartu, Estonia
In law:
- Tribunal Regional do Trabalho (Regional Labor Court), an appellate court in Brazil
- Trademark Registration Treaty, a treaty involved in intellectual property identification
- Thai Rak Thai, a former Thai political party
In medicine:
- Testosterone replacement therapy, a form of hormone replacement therapy
- Therapeutic recreational therapy, a form of recreational therapy
- Thoracic radiation therapy, a form of radiation therapy
- Tinnitus retraining therapy, a form of therapy designed to help people who suffer from tinnitus (ringing ears)
In aviation:
- Takeoff Rated Thrust, a jet turbofan thrust level used for aircraft takeoff
- Turnaround time, the time during which a aircraft must remain parked at the gate. See Aircraft ground handling
Other:
- Technical rescue team, a rescue squad trained in skills beyond those of normal emergency rescue
- This Romantic Tragedy
- These Recessionary Times
- The Random Tuuber, player in sa-mp