| Acronym | Definition |
|---|
| TR | Token Ring (network) |
| TR | Trust (IRB) |
| TR | Turkey |
| TR | Translation |
| TR | Trace (mathematics) |
| TR | Transaction |
| TR | Technical Report |
| TR | Trainer |
| TR | Translator |
| TR | Tear |
| TR | Turkiye |
| TR | Table Row |
| TR | Torre ( Portuguese: tower; postal usage) |
| TR | Trustee |
| TR | Triton (Korg) |
| TR | Terni (Italy) |
| TR | Transistor |
| TR | Troop |
| TR | Tomb Raider (computer game) |
| TR | Tabula Rasa (game) |
| TR | Tax Return |
| TR | Theodore Roosevelt |
| TR | Truro (UK postal code) |
| TR | Third Reich |
| TR | Teddy Roosevelt (twenty-sixth president of the United States) |
| TR | Turkish Republic |
| TR | Trip Report |
| TR | Total Rebounds (basketball statistic) |
| TR | Tape Recorder |
| TR | Texas Rangers (baseball team) |
| TR | The Rasmus (Finnish band) |
| TR | tax ruling |
| TR | Trill (Music) |
| TR | Transposed |
| TR | Technical Reference |
| TR | Times Roman (font) |
| TR | Total Revenue |
| TR | Trent Reznor (Nine Inch Nails) |
| TR | Test Report |
| TR | The Raconteurs (band) |
| TR | Technical Review |
| TR | The Ramones (band) |
| TR | Therapeutic Recreation |
| TR | Tricuspid Regurgitation |
| TR | Transmitter/Receiver (also seen as T/R) |
| TR | The Rejected (movie) |
| tR | Retention Time (chromatography) |
| TR | Todd Rundgren (musician) |
| TR | Textus Receptus (bible translation) |
| TR | Toronto Raptors |
| TR | The Regulators |
| TR | Transfer Request |
| TR | Transmit-Receive |
| TR | Team Rocket |
| TR | Test Review |
| TR | Tyrannosaurus Rex |
| TR | Tobacco Road |
| TR | Threshold Requirement |
| TR | Tome Raider (computer reader program) |
| TR | Task Register |
| TR | Terminal Ready |
| TR | Training Routine (Scientology) |
| TR | T Cell Receptors |
| TR | True Range |
| TR | Technical Representative |
| TR | Threaded Rod |
| TR | Target Recognition |
| TR | Threat Reduction (LANL Directorate) |
| TR | Trouble Report |
| TR | Training Report |
| TR | Temporal Reference |
| TR | Technical Requirement |
| TR | Test Rule (testing methodology) |
| TR | Tail Rotor |
| TR | Training Request |
| TR | The Resurrected (gaming clan) |
| TR | Tip and Ring |
| TR | Transaction Record |
| TR | Tactical Reconnaissance (Army) |
| TR | Travel Request |
| TR | Traffic Routing |
| TR | Telecommunications Room |
| TR | Terminate Request |
| TR | Terran Republic (Planetside game empire) |
| TR | Topical Report |
| TR | TRADOC Regulation |
| TR | Thrust Reverser |
| TR | Transaction Register |
| TR | Transformer Rectifier |
| TR | Tire Rotation |
| TR | Tilt Rotor |
| TR | Temperature Recorder |
| TR | Transportation Request |
| TR | Time to Repeat (magnetic resonance imaging) |
| TR | Termination Request |
| TR | Turbo Regal (Buick model) |
| TR | Tank Regiment |
| TR | Tub Ring (band) |
| TR | Threat Response |
| TR | Talyllyn Railway (Wales) |
| TR | Timer Relay |
| TR | Tons of Refrigeration |
| TR | Tubular Reactor |
| TR | Technische Recherche (Dutch: Scene of Crime Department) |
| TR | Text Relay |
| TR | Time of Repetition (Magnetic resonance imaging parameter) |
| TR | Tip Return |
| TR | Throws Right (baseball) |
| TR | Tail Race |
| TR | Transmit Ring |
| TR | Total Residue |
| TR | Torque Ratio |
| TR | Trunk Reservation |
| TR | Treasury Receipt |
| TR | Transmit Ready |
| TR | Track Radar |
| TR | Trinity Rack (Korg) |
| TR | Telerecording |
| TR | Transformer Room |
| TR | Topographical Representation |
| TR | Time Restraint |
| TR | Theoretical Resolution |
| TR | Targeting Radar |
| TR | Turndown Ratio (fluid engineering) |
| TR | Territory Representative |
| TR | Tritium Recovery |
| TR | Thunder Range (test site) |
| TR | Toe Raises (strength-building exercise) |
| TR | Techrelated.com (website) |
| TR | Toy Ranch |
| TR | Tracking Router |
| TR | Transfer Robot |
| TR | Theater Reserve |
| TR | Track Receive (TARTAR) |
| TR | Tubing Retrievable (oilfield term) |
| TR | Transportability Report |
| TR | Telomeric RNA |
| TR | Theta Radiation (Star Trek) |
| TR | Terminal-Pair Reliability |
| TR | Tonnage of Refrigeration |
| TR | Telomerase RNA Candidate |
| TR | Transition Redundancy |
| TR | Turbine Rate |
| TR | VFR Low Altitude Training Routes |
| TR | Telephone Retrieval |
| TR | Trasportes Rojas (Guatemala, freight cargo industry) |
| TR | Tributary Receiver (SONET) |
| TR | Trauma Reduction Inc. |
| TR | Transportes Rojas |
| TR | Takefu Renaissance (urban renewal movement; Japan) |