TR or tr may stand for
Arts and entertainment
Gaming
- Tomb Raider, a video game franchise
 - Terminal Reality, an American video game developer
 - A currency in online game TalesRunner
 - Terran Republic (PlanetSide), a faction in the video game series PlanetSide
 
Music
- Korg TR, a variant of the Korg Triton music workstation synthesizer
 - Trill, notation for musical ornament
 - TR-808, TR-909 etc., 1980s Roland drum machines
 
Businesses and organizations
- Scoot, IATA code since 2017
 - Tiger Airways, IATA code between 2003 and 2017
 - Tomahawk Railway, reporting mark
 - Transbrasil, IATA airline code until 2001
 - Team Rubicon, commonly used abbreviation
 - Talyllyn Railway, a Welsh railway
 - Thomson Reuters, a Canadian multinational media conglomerate
 - Texas Roadhouse, restaurant chain in the United States
 - Tokyu Railways. See Tokyu Corporation.
 
Language
- Tr, a digraph
 - Turkish language (ISO 639 alpha-1 code "tr")
 
People
- Theodore Roosevelt, the 26th president of the United States
- Presidency of Theodore Roosevelt, 1901-1909
 - The USS Theodore Roosevelt (CVN-71), a Nimitz-class aircraft carrier
 
 - T. Rajendar, Indian filmmaker and politician
 - T. Ramachandran, Indian writer who wrote under these initials
 
Places
- TR postcode area, UK postal code for the Truro area
 - Travelers Rest, South Carolina
 - ISO 3166-1 alpha-2 country code of Turkey
 - Vehicle registration code of Tripura, a state of India
 
Science, technology, and mathematics
Biology and medicine
- Thyroid hormone receptor, a nuclear receptor
 - Tricuspid regurgitation, within the heart
 - Repetition time, magnetic resonance imaging
 - Taxonomic rank
 
Computing
- .tr, the country code top level domain (ccTLD) for Turkey
 - tr (Unix), command to translate characters
 - Table row, an HTML element 
<tr>...</tr> 
Vehicles
- Thai Rung Union Car
 - Toronto Rocket, a rolling stock of the Toronto subway
 - Triumph Motor Company. a sports car designation, e.g. TR2
 - Ferrari TR (set index), several cars
 
Other uses in science, technology, finance, and mathematics
- TR-1, a version of the Lockheed U-2 aircraft
 - Technical Report, a type of ISO document
 - Trace (linear algebra)
 - Ton of refrigeration
 - Total return
 
Other uses
- Textus Receptus: Printed Greek New Testament translation sources
 - Training routines (Scientology)
 - Tax return
 - Tax refund
 
See also
- All pages with titles beginning with TR
 - All pages with titles containing TR
 - All pages with titles containing T.R.
 
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