| TRT | Tactical Response Team 
| Others |
| TRT | Tal Running Time
| Others |
| TRT | Talbot Racing Team
| Others |
| TRT | Talk Run Time
| Others |
| TRT | Tamil Radio and Television
| Others |
| TRT | Target Return Time
| Others |
| TRT | Technical Recovery Team
| Others |
| TRT | Technical Rescue Team
| Others |
| TRT | Technology Resource Teacher
| Others |
| TRT | Teleoperation Robotic Testbed
| Others |
| TRT | Temple Rodeph Torah
| Others |
| TRT | Temporary Replacement Teacher
| Others |
| TRT | Terlingua Racing Team
| Others |
| TRT | Terrain Reconnaissance Tool
| Others |
| TRT | Testosterone Replacement Therapy
| Others |
| TRT | Thaksin Robs Thailand
| Others |
| TRT | Thales Research and Technology
| Others |
| TRT | The Radiance Technique
| Others |
| TRT | Thermal Relaxation Time
| Others |
| TRT | Thermal Remediation Technologies
| Others |
| TRT | Third Rail Therapy
| Others |
| TRT | Tidd Ross Todd
| Others |
| TRT | Time Release Technology
| Others |
| TRT | Tinnitus Retaining Treatment
| Others |
| TRT | Tinnitus Retraining Therapy
| Others |
| TRT | Tissue Regeneration Technologies
| Others |
| TRT | Tissue Regeneration Therapeutics
| Others |
| TRT | Token Rotation Time
| Others |
| TRT | Top-pressure Recovery Turbine
| Others |
| TRT | Torque Release Technique
| Others |
| TRT | Total Reaction Time
| Others |
| TRT | Total Response Time
| Others |
| TRT | Total Running Time
| Others |
| TRT | Tough Rough Technical
| Others |
| TRT | Toyota Racing Team
| Others |
| TRT | Toyota Road Trek
| Others |
| TRT | Track Road Trail
| Others |
| TRT | Transition Radiation Tracker
| Others |
| TRT | Transmit Record Table
| Others |
| TRT | Transport Relay Translator
| Others |
| TRT | Transportation Research Thesaurus
| Others |
| TRT | Trauma Release Technique
| Others |
| TRT | Trauma Resolution Therapy
| Others |
| TRT | Trick 'R Treat
| Others |
| TRT | Trofeo Rally Terra
| Others |
| TRT | Tshwane Rapid Transit
| Others |
| TRT | Turkish Radio And Television
| Others |
| TRT | Turkish Radio Television
| Others |
| TRT | Turkish Radio Television Corporation
| Others |
| TRT | Turn Round Time
| Others |
| TRT | Tussing, Robins, & Tussing
| Others |