TR or tr may stand for

Arts and entertainment

Gaming

* Tomb Raider, one of the most successful video game franchises * Terminal Reality, an American video game developer * A currency in online game '' TalesRunner'' * The Terran Republic in the game ''

PlanetSide ''PlanetSide'' was a massively-multiplayer online first-person-shooter video game published by Sony Online Entertainment and released on May 20, 2003. ''PlanetSide'' chronicles the efforts of three factions as they fight for territorial contro ...

Music

* Korg TR, a variant of the Korg Triton music workstation synthesizer * Trill, notation for musical ornament * TR-808,

TR-909 The Roland TR-909 Rhythm Composer is a drum machine introduced by Roland Corporation in 1983, succeeding the TR-808. It was the first Roland drum machine to use samples for some sounds, and the first with MIDI functionality, allowing it to syn ...

etc., 1980s Roland drum machines

Businesses and organizations

* Scoot, IATA code since 2017 *

Tiger Airways Tiger Airways Singapore Pte Ltd, operating as Tigerair, was a budget airline headquartered in Singapore. It operated services to regional destinations in Southeast Asia, Bangladesh, Taiwan, China and India from its main base at Singapore Changi ...

, IATA code between 2003 and 2017 *

Tomahawk Railway The Tomahawk Railway is the trade name employed by Genesee & Wyoming to operate of railroad in northern Wisconsin.Tomahawk Railway

, reporting mark *

Transbrasil TransBrasil was a Brazilian airline which ceased operations on 3 December 2001. During most of its history, Transbrasil was owned by local entrepreneur Omar Fontana. Its aircraft usually featured a colorful livery, remarkably with a rainbow on the ...

, 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 , a ''Nimitz''-class aircraft carrier *

T. Rajendar Thesingu Rajendar (born 9 May 1960), also known as Vijaya T. Rajendar or T. R., is an Indian actor, filmmaker, musician, cinematographer and distributor who works primarily in Tamil film industry. He is also a politician in Chennai, Tamil Nadu ...

, Indian filmmaker and politician * Todd Rundgren, American musician and record producer

Places

* TR postcode area, UK postal code for the Truro area * Travelers Rest, South Carolina, US * Turkey (ISO 3166-1 alpha-2 country code TR)

Science, technology, and mathematics

Biology and medicine

* Thyroid hormone receptor, a nuclear receptor * Tricuspid regurgitation, within the heart * Repetition time,

magnetic resonance imaging Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes of the body. MRI scanners use strong magnetic fields, magnetic field gradients, and radio wave ...

* Taxonomic rank

Computing

.tr .tr is the Internet country code top-level domain (ccTLD) for Turkey. It is administered by trABİS (under the Information and Communication Technologies Authority of Turkey) and managed by the Computer Center DNS Group of the ICT Authority. The ...

, the country code top level domain (ccTLD) for Turkey * tr (Unix), command to translate characters * Table row, an

HTML element An HTML element is a type of HTML (HyperText Markup Language) document component, one of several types of HTML nodes (there are also text nodes, comment nodes and others). The first used version of HTML was written by Tim Berners-Lee in 1993 ...

Vehicles

* Thai Rung Union Car *

Toronto Rocket The Toronto Rocket (TR) train is the fifth and latest series of rolling stock used in the Toronto subway system in Toronto, Ontario, Canada. Owned and operated by the Toronto Transit Commission (TTC), the trains were built by Bombardier Transpor ...

, 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 The total return on a portfolio of investments takes into account not only the capital appreciation on the portfolio, but also the income received on the portfolio. The income typically consists of interest, dividends, and securities lending fees. ...

Other uses

* Textus Receptus: Printed Greek New Testament translation sources *

Training routines (Scientology) The training routines (TR) are training exercises or drills used in the Church of Scientology as well as affiliated programs Narconon, Criminon and WISE. The church describes them as a way of learning to communicate effectively and to control situ ...

Tax return A tax return is the completion of documentation that calculates an entity or individual's income earned and the amount of taxes to be paid to the government or government organizations or, potentially, back to the taxpayer. Taxation is one of ...

* Tax refund