Other
- Hutchison 3G, trading as 3, a mobile operator in Sweden
- Tampere, a city in Finland
- Telecommunications Research Establishment, British radar research organization
- Tempore Regis Eduardi (Latin for in the time of King Edward), much used in the Domesday Book (1085-1086) and meaning the period immediately before the Norman conquest of England
- Timing Retard Eliminator, a device used to supposedly improve the performance of Suzuki motorcycles
- Tiree Airport, IATA airport code TRE
- Transnet Rail Engineering, formerly Transwerk, a division of Transnet, the South African rail transport parastatal
- Tribunal Regional Eleitoral, an appellate court in Brazil
- Trinity Railway Express, commuter rail line in the Dallas Fort Worth Metroplex
- Tre Volost, a division of the Novgorod Republic
- TRE (computing), a regular expression engine with approximate (fuzzy) matching ability.
- Theologische Realenzyklopädie, a German encyclopedia of theology and religious studies
- Trauma Releasing Exercises, a set of physical exercises designed by Dr. David Berceli to release stress and trauma from the body
Read more about this topic: TRE