TRF
TRF may refer to:
- Sandefjord Airport, Torp, Norway, IATA code
- Tactical recognition flash, UK armed forces
- Terminal restriction fragments, used in measuring telomere length
- Texas Renaissance Festival, USA
- Thief River Falls, Minnesota, USA
- Thoroughbred Retirement Foundation, racehorse rescue organization
- Thyrotropin-releasing factor, a peptide hormone secreted by the hypothalamus
- TRF (band), a J-pop group
- Regional Federal Courts (Portuguese: Tribunais Regionais Federais), Brazilian Federal appellate courts
- Tuned radio frequency receiver or TRF receiver, a type of radio receiver circuit
- TRF1, French howitzer
- Time-restricted feeding, a type of intermittent fasting
- Transfer RNA-derived fragment
- Tutorial Request Form. A worksheet used to show subjects you have trouble with so you can be tutored in it. Used by college preparatory program AVID.