| Acronym | Definition |
|---|
| TRF | Transfer |
| TRF | Tribunal Regional Federal (Federal Regional Court; Brazil) |
| TRF | Thief River Falls (Minnesota) |
| TRF | The Rotary Foundation |
| TRF | Transportation Research Forum |
| TRF | Transferrin |
| TRF | Thoroughbred Retirement Foundation |
| TRF | Time Resolved Fluorescence |
| TRF | Teacher Report Form |
| TRF | Trail Riders Fellowship (UK) |
| TRF | Tropical Rain Forest |
| TRF | Tuned Radio Frequency |
| TRF | Terrestrial Reference Frame |
| TRF | Texas Renaissance Festival |
| TRF | T cell Replacing Factor |
| TRF | Trident Refit Facility |
| TRF | Tetsuya Komuro Rave Factory (band; Japan) |
| TRF | Travel Request Form |
| TRF | Test Result Form |
| TRF | Telomere Restriction Fragments |
| TRF | Turbine Rear Frame (jet engine component) |
| TRF | Sandefjord, Norway - Torf (Airport Code) |
| TRF | Training Request Form |
| TRF | Textbook Revolving Fund |
| TRF | Turbine Research Facility |
| TRF | Thrasher Research Fund |
| TRF | The Rush Forum |
| TRF | Tehuti Research Foundation (Greensboro, NC) |
| TRF | Technical Reference File |
| TRF | Technical Replacement Factor |
| TRF | Transitional Results Framework |
| TRF | Transport Research Facility |
| TRF | Temporary Relocatable Facility |
| TRF | Tactical Reconnaissance Fighter |
| TRF | Technology Request Form (paper work) |
| TRF | Third Revised Forecast (finance) |
| TRF | The Royal Flush (gaming guild) |
| TRF | Target Redemption Forward (finance) |
| TRF | Tandem Repeats Finder (algorithm) |
| TRF | Thomson Reuters Foundation (est. 1982) |